コード例 #1
0
ファイル: run_generic.py プロジェクト: yuchaz/sims_maf
def connectDb(dbfile):
    version = db.testOpsimVersion(dbfile)
    if version == "Unknown":
        opsdb = db.Database(dbfile)
        colmap = batches.ColMapDict('barebones')
    elif version == "V3":
        opsdb = db.OpsimDatabaseV3(dbfile)
        colmap = batches.ColMapDict('OpsimV3')
    elif version == "V4":
        opsdb = db.OpsimDatabaseV4(dbfile)
        colmap = batches.ColMapDict('OpsimV4')
    return opsdb, colmap
コード例 #2
0
    def testOut(self):
        """
        Check that the metric bundle can generate the expected output
        """
        nside = 8
        slicer = slicers.HealpixSlicer(nside=nside)
        metric = metrics.MeanMetric(col='airmass')
        sql = 'filter="r"'
        stacker1 = stackers.RandomDitherFieldPerVisitStacker()
        stacker2 = stackers.GalacticStacker()
        map1 = maps.GalCoordsMap()
        map2 = maps.StellarDensityMap()

        metricB = metricBundles.MetricBundle(metric,
                                             slicer,
                                             sql,
                                             stackerList=[stacker1, stacker2],
                                             mapsList=[map1, map2])
        database = os.path.join(getPackageDir('sims_data'), 'OpSimData',
                                'astro-lsst-01_2014.db')

        opsdb = db.OpsimDatabaseV4(database=database)
        resultsDb = db.ResultsDb(outDir=self.outDir)

        bgroup = metricBundles.MetricBundleGroup({0: metricB},
                                                 opsdb,
                                                 outDir=self.outDir,
                                                 resultsDb=resultsDb)
        bgroup.runAll()
        bgroup.plotAll()
        bgroup.writeAll()

        opsdb.close()

        outThumbs = glob.glob(os.path.join(self.outDir, 'thumb*'))
        outNpz = glob.glob(os.path.join(self.outDir, '*.npz'))
        outPdf = glob.glob(os.path.join(self.outDir, '*.pdf'))

        # By default, make 3 plots for healpix
        assert (len(outThumbs) == 3)
        assert (len(outPdf) == 3)
        assert (len(outNpz) == 1)
コード例 #3
0
def makeBundleList(dbFile, runName=None, nside=64, benchmark='design',
                   lonCol='fieldRA', latCol='fieldDec', seeingCol='seeingFwhmGeom'):
    """
    make a list of metricBundle objects to look at the scientific performance
    of an opsim run.
    """

    # List to hold everything we're going to make
    bundleList = []

    # List to hold metrics that shouldn't be saved
    noSaveBundleList = []

    # Connect to the databse
    opsimdb = db.OpsimDatabaseV4(dbFile)
    if runName is None:
        runName = os.path.basename(dbFile).replace('_sqlite.db', '')

    # Fetch the proposal ID values from the database
    propids, propTags = opsimdb.fetchPropInfo()

    # Fetch the telescope location from config
    lat, lon, height = opsimdb.fetchLatLonHeight()

    # Add metadata regarding dithering/non-dithered.
    commonname = ''.join([a for a in lonCol if a in latCol])
    if commonname == 'field':
        slicermetadata = ' (non-dithered)'
    else:
        slicermetadata = ' (%s)' % (commonname)

    # Construct a WFD SQL where clause so multiple propIDs can query by WFD:
    wfdWhere = opsimdb.createSQLWhere('WFD', propTags)
    print('#FYI: WFD "where" clause: %s' % (wfdWhere))
    ddWhere = opsimdb.createSQLWhere('DD', propTags)
    print('#FYI: DD "where" clause: %s' % (ddWhere))

    # Set up benchmark values, scaled to length of opsim run.
    runLength = opsimdb.fetchRunLength()
    if benchmark == 'requested':
        # Fetch design values for seeing/skybrightness/single visit depth.
        benchmarkVals = utils.scaleBenchmarks(runLength, benchmark='design')
        # Update nvisits with requested visits from config files.
        benchmarkVals['nvisits'] = opsimdb.fetchRequestedNvisits(propId=propTags['WFD'])
        # Calculate expected coadded depth.
        benchmarkVals['coaddedDepth'] = utils.calcCoaddedDepth(benchmarkVals['nvisits'],
                                                               benchmarkVals['singleVisitDepth'])
    elif (benchmark == 'stretch') or (benchmark == 'design'):
        # Calculate benchmarks for stretch or design.
        benchmarkVals = utils.scaleBenchmarks(runLength, benchmark=benchmark)
        benchmarkVals['coaddedDepth'] = utils.calcCoaddedDepth(benchmarkVals['nvisits'],
                                                               benchmarkVals['singleVisitDepth'])
    else:
        raise ValueError('Could not recognize benchmark value %s, use design, stretch or requested.'
                         % (benchmark))
    # Check that nvisits is not set to zero (for very short run length).
    for f in benchmarkVals['nvisits']:
        if benchmarkVals['nvisits'][f] == 0:
            print('Updating benchmark nvisits value in %s to be nonzero' % (f))
            benchmarkVals['nvisits'][f] = 1

    # Set values for min/max range of nvisits for All/WFD and DD plots. These are somewhat arbitrary.
    nvisitsRange = {}
    nvisitsRange['all'] = {'u': [20, 80], 'g': [50, 150], 'r': [100, 250],
                           'i': [100, 250], 'z': [100, 300], 'y': [100, 300]}
    nvisitsRange['DD'] = {'u': [6000, 10000], 'g': [2500, 5000], 'r': [5000, 8000],
                          'i': [5000, 8000], 'z': [7000, 10000], 'y': [5000, 8000]}
    # Scale these ranges for the runLength.
    scale = runLength / 10.0
    for prop in nvisitsRange:
        for f in nvisitsRange[prop]:
            for i in [0, 1]:
                nvisitsRange[prop][f][i] = int(np.floor(nvisitsRange[prop][f][i] * scale))

    # Filter list, and map of colors (for plots) to filters.
    filters = ['u', 'g', 'r', 'i', 'z', 'y']
    colors = {'u': 'cyan', 'g': 'g', 'r': 'y', 'i': 'r', 'z': 'm', 'y': 'k'}
    filtorder = {'u': 1, 'g': 2, 'r': 3, 'i': 4, 'z': 5, 'y': 6}

    # Easy way to run through all fi

    # Set up a list of common summary stats
    commonSummary = [metrics.MeanMetric(), metrics.RobustRmsMetric(), metrics.MedianMetric(),
                     metrics.PercentileMetric(metricName='25th%ile', percentile=25),
                     metrics.PercentileMetric(metricName='75th%ile', percentile=75),
                     metrics.MinMetric(), metrics.MaxMetric()]
    allStats = commonSummary

    # Set up some 'group' labels
    reqgroup = 'A: Required SRD metrics'
    depthgroup = 'B: Depth per filter'
    uniformitygroup = 'C: Uniformity'
    airmassgroup = 'D: Airmass distribution'
    seeinggroup = 'E: Seeing distribution'
    transgroup = 'F: Transients'
    sngroup = 'G: SN Ia'
    altAzGroup = 'H: Alt Az'
    rangeGroup = 'I: Range of Dates'
    intergroup = 'J: Inter-Night'
    phaseGroup = 'K: Max Phase Gap'
    NEOGroup = 'L: NEO Detection'

    # Set up an object to track the metricBundles that we want to combine into merged plots.
    mergedHistDict = {}

    # Set the histogram merge function.
    mergeFunc = plots.HealpixHistogram()

    keys = ['NVisits', 'coaddm5', 'NormEffTime', 'Minseeing', 'seeingAboveLimit', 'minAirmass',
            'fracAboveAirmass']

    for key in keys:
        mergedHistDict[key] = plots.PlotBundle(plotFunc=mergeFunc)

    ##
    # Calculate the fO metrics for all proposals and WFD only.
    order = 0
    for prop in ('All prop', 'WFD only'):
        if prop == 'All prop':
            metadata = 'All Visits' + slicermetadata
            sqlconstraint = ''
        if prop == 'WFD only':
            metadata = 'WFD only' + slicermetadata
            sqlconstraint = '%s' % (wfdWhere)
        # Configure the count metric which is what is used for f0 slicer.
        m1 = metrics.CountMetric(col='observationStartMJD', metricName='fO')
        plotDict = {'xlabel': 'Number of Visits', 'Asky': benchmarkVals['Area'],
                    'Nvisit': benchmarkVals['nvisitsTotal'], 'xMin': 0, 'xMax': 1500}
        summaryMetrics = [metrics.fOArea(nside=nside, norm=False, metricName='fOArea: Nvisits (#)',
                                         Asky=benchmarkVals['Area'], Nvisit=benchmarkVals['nvisitsTotal']),
                          metrics.fOArea(nside=nside, norm=True, metricName='fOArea: Nvisits/benchmark',
                                         Asky=benchmarkVals['Area'], Nvisit=benchmarkVals['nvisitsTotal']),
                          metrics.fONv(nside=nside, norm=False, metricName='fONv: Area (sqdeg)',
                                       Asky=benchmarkVals['Area'], Nvisit=benchmarkVals['nvisitsTotal']),
                          metrics.fONv(nside=nside, norm=True, metricName='fONv: Area/benchmark',
                                       Asky=benchmarkVals['Area'], Nvisit=benchmarkVals['nvisitsTotal'])]
        caption = 'The FO metric evaluates the overall efficiency of observing. '
        caption += ('fOArea: Nvisits = %.1f sq degrees receive at least this many visits out of %d. '
                    % (benchmarkVals['Area'], benchmarkVals['nvisitsTotal']))
        caption += ('fONv: Area = this many square degrees out of %.1f receive at least %d visits.'
                    % (benchmarkVals['Area'], benchmarkVals['nvisitsTotal']))
        displayDict = {'group': reqgroup, 'subgroup': 'F0', 'displayOrder': order, 'caption': caption}
        order += 1
        slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)

        bundle = metricBundles.MetricBundle(m1, slicer, sqlconstraint, plotDict=plotDict,
                                            displayDict=displayDict, summaryMetrics=summaryMetrics,
                                            plotFuncs=[plots.FOPlot()],
                                            runName=runName, metadata=metadata)
        bundleList.append(bundle)

    ###
    # Calculate the Rapid Revisit Metrics.
    order = 0
    metadata = 'All Visits' + slicermetadata
    sqlconstraint = ''
    dTmin = 40.0  # seconds
    dTmax = 30.0*60. # seconds
    minNvisit = 100
    pixArea = float(hp.nside2pixarea(nside, degrees=True))
    scale = pixArea * hp.nside2npix(nside)
    cutoff1 = 0.15
    extraStats1 = [metrics.FracBelowMetric(cutoff=cutoff1, scale=scale, metricName='Area (sq deg)')]
    extraStats1.extend(commonSummary)
    slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
    m1 = metrics.RapidRevisitMetric(metricName='RapidRevisitUniformity',
                                    dTmin=dTmin / 60.0 / 60.0 / 24.0, dTmax=dTmax / 60.0 / 60.0 / 24.0,
                                    minNvisits=minNvisit)

    plotDict = {'xMin': 0, 'xMax': 1}
    summaryStats = extraStats1
    caption = 'Deviation from uniformity for short revisit timescales, between %s and %s seconds, ' % (
        dTmin, dTmax)
    caption += 'for pointings with at least %d visits in this time range. ' % (minNvisit)
    caption += 'Summary statistic "Area" below indicates the area on the sky which has a '
    caption += 'deviation from uniformity of < %.2f.' % (cutoff1)
    displayDict = {'group': reqgroup, 'subgroup': 'Rapid Revisit', 'displayOrder': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(m1, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1

    dTmax = dTmax/60.0 # need time in minutes for Nrevisits metric
    m2 = metrics.NRevisitsMetric(dT=dTmax)
    plotDict = {'xMin': 0.1, 'xMax': 2000, 'logScale': True}
    cutoff2 = 800
    extraStats2 = [metrics.FracAboveMetric(cutoff=cutoff2, scale=scale, metricName='Area (sq deg)')]
    extraStats2.extend(commonSummary)
    caption = 'Number of consecutive visits with return times faster than %.1f minutes, ' % (dTmax)
    caption += 'in any filter, all proposals. '
    caption += 'Summary statistic "Area" below indicates the area on the sky which has more than '
    caption += '%d revisits within this time window.' % (cutoff2)
    summaryStats = extraStats2
    displayDict = {'group': reqgroup, 'subgroup': 'Rapid Revisit', 'displayOrder': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(m2, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    m3 = metrics.NRevisitsMetric(dT=dTmax, normed=True)
    plotDict = {'xMin': 0, 'xMax': 1, 'cbarFormat': '%.1f'}
    cutoff3 = 0.6
    extraStats3 = [metrics.FracAboveMetric(cutoff=cutoff3, scale=scale, metricName='Area (sq deg)')]
    extraStats3.extend(commonSummary)
    summaryStats = extraStats3
    caption = 'Fraction of total visits where consecutive visits have return times faster '
    caption += 'than %.1f minutes, in any filter, all proposals. ' % (dTmax)
    caption += 'Summary statistic "Area" below indicates the area on the sky which has more '
    caption += 'than %d revisits within this time window.' % (cutoff3)
    displayDict = {'group': reqgroup, 'subgroup': 'Rapid Revisit', 'displayOrder': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(m3, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1

    # And add a histogram of the time between quick revisits.
    binMin = 0
    binMax = 120.
    binsize = 3.
    bins_metric = np.arange(binMin / 60.0 / 24.0, (binMax + binsize) / 60. / 24., binsize / 60. / 24.)
    bins_plot = bins_metric * 24.0 * 60.0
    m1 = metrics.TgapsMetric(bins=bins_metric, metricName='dT visits')
    plotDict = {'bins': bins_plot, 'xlabel': 'dT (minutes)'}
    caption = ('Histogram of the time between consecutive revisits (<%.1f minutes), over entire sky.'
               % (binMax))
    displayDict = {'group': reqgroup, 'subgroup': 'Rapid Revisit', 'order': order,
                   'caption': caption}
    slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
    plotFunc = plots.SummaryHistogram()
    bundle = metricBundles.MetricBundle(m1, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName,
                                        metadata=metadata, plotFuncs=[plotFunc])
    bundleList.append(bundle)
    order += 1

    ##
    # Trigonometric parallax and proper motion @ r=20 and r=24
    slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
    sqlconstraint = ''
    order = 0
    metric = metrics.ParallaxMetric(metricName='Parallax 20', rmag=20, seeingCol=seeingCol)
    summaryStats = allStats
    plotDict = {'cbarFormat': '%.1f', 'xMin': 0, 'xMax': 3}
    displayDict = {'group': reqgroup, 'subgroup': 'Parallax', 'order': order,
                   'caption': 'Parallax precision at r=20. (without refraction).'}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ParallaxMetric(metricName='Parallax 24', rmag=24, seeingCol=seeingCol)
    plotDict = {'cbarFormat': '%.1f', 'xMin': 0, 'xMax': 10}
    displayDict = {'group': reqgroup, 'subgroup': 'Parallax', 'order': order,
                   'caption': 'Parallax precision at r=24. (without refraction).'}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ParallaxMetric(metricName='Parallax Normed', rmag=24, normalize=True,
                                    seeingCol=seeingCol)
    plotDict = {'xMin': 0.5, 'xMax': 1.0}
    displayDict = {'group': reqgroup, 'subgroup': 'Parallax', 'order': order,
                   'caption':
                   'Normalized parallax (normalized to optimum observation cadence, 1=optimal).'}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ParallaxCoverageMetric(metricName='Parallax Coverage 20', rmag=20, seeingCol=seeingCol)
    plotDict = {}
    caption = "Parallax factor coverage for an r=20 star (0 is bad, 0.5-1 is good). "
    caption += "One expects the parallax factor coverage to vary because stars on the ecliptic "
    caption += "can be observed when they have no parallax offset while stars at the pole are always "
    caption += "offset by the full parallax offset."""
    displayDict = {'group': reqgroup, 'subgroup': 'Parallax', 'order': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ParallaxCoverageMetric(metricName='Parallax Coverage 24', rmag=24, seeingCol=seeingCol)
    plotDict = {}
    caption = "Parallax factor coverage for an r=24 star (0 is bad, 0.5-1 is good). "
    caption += "One expects the parallax factor coverage to vary because stars on the ecliptic "
    caption += "can be observed when they have no parallax offset while stars at the pole are always "
    caption += "offset by the full parallax offset."""
    displayDict = {'group': reqgroup, 'subgroup': 'Parallax', 'order': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ParallaxDcrDegenMetric(metricName='Parallax-DCR degeneracy 20', rmag=20,
                                            seeingCol=seeingCol)
    plotDict = {}
    caption = 'Correlation between parallax offset magnitude and hour angle an r=20 star.'
    caption += ' (0 is good, near -1 or 1 is bad).'
    displayDict = {'group': reqgroup, 'subgroup': 'Parallax', 'order': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ParallaxDcrDegenMetric(metricName='Parallax-DCR degeneracy 24', rmag=24,
                                            seeingCol=seeingCol)
    plotDict = {}
    caption = 'Correlation between parallax offset magnitude and hour angle an r=24 star.'
    caption += ' (0 is good, near -1 or 1 is bad).'
    displayDict = {'group': reqgroup, 'subgroup': 'Parallax', 'order': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1

    metric = metrics.ProperMotionMetric(metricName='Proper Motion 20', rmag=20, seeingCol=seeingCol)

    summaryStats = allStats
    plotDict = {'xMin': 0, 'xMax': 3}
    displayDict = {'group': reqgroup, 'subgroup': 'Proper Motion', 'order': order,
                   'caption': 'Proper Motion precision at r=20.'}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ProperMotionMetric(rmag=24, metricName='Proper Motion 24', seeingCol=seeingCol)
    summaryStats = allStats
    plotDict = {'xMin': 0, 'xMax': 10}
    displayDict = {'group': reqgroup, 'subgroup': 'Proper Motion', 'order': order,
                   'caption': 'Proper Motion precision at r=24.'}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1
    metric = metrics.ProperMotionMetric(rmag=24, normalize=True, metricName='Proper Motion Normed',
                                        seeingCol=seeingCol)
    plotDict = {'xMin': 0.2, 'xMax': 0.7}
    caption = 'Normalized proper motion at r=24. '
    caption += '(normalized to optimum observation cadence - start/end. 1=optimal).'
    displayDict = {'group': reqgroup, 'subgroup': 'Proper Motion', 'order': order,
                   'caption': caption}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, summaryMetrics=summaryStats,
                                        runName=runName, metadata=metadata)
    bundleList.append(bundle)
    order += 1

    ##
    # Calculate the time uniformity in each filter, for each year.
    order = 0

    slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
    plotFuncs = [plots.TwoDMap()]
    step = 0.5
    bins = np.arange(0, 365.25 * 10 + 40, 40) - step
    metric = metrics.AccumulateUniformityMetric(bins=bins)
    plotDict = {'xlabel': 'Night (days)', 'xextent': [bins.min(
    ) + step, bins.max() + step], 'cbarTitle': 'Uniformity'}
    for f in filters:
        sqlconstraint = 'filter = "%s"' % (f)
        caption = 'Deviation from uniformity in %s band. ' % f
        caption += 'Northern Healpixels are at the top of the image.'
        caption += '(0=perfectly uniform, 1=perfectly nonuniform).'
        displayDict = {'group': uniformitygroup, 'subgroup': 'per night',
                       'order': filtorder[f], 'caption': caption}
        metadata = '%s band' % (f) + slicermetadata
        bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                            displayDict=displayDict, runName=runName, metadata=metadata,
                                            plotFuncs=plotFuncs)
        noSaveBundleList.append(bundle)

    ##
    # Depth metrics.
    slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
    for f in filters:
        propCaption = '%s band, all proposals %s' % (f, slicermetadata)
        sqlconstraint = 'filter = "%s"' % (f)
        metadata = '%s band' % (f) + slicermetadata
        # Number of visits.
        metric = metrics.CountMetric(col='observationStartMJD', metricName='NVisits')
        plotDict = {'xlabel': 'Number of visits',
                    'xMin': nvisitsRange['all'][f][0],
                    'xMax': nvisitsRange['all'][f][1],
                    'colorMin': nvisitsRange['all'][f][0],
                    'colorMax': nvisitsRange['all'][f][1],
                    'binsize': 5,
                    'logScale': True, 'nTicks': 4, 'colorMin': 1}
        summaryStats = allStats
        displayDict = {'group': depthgroup, 'subgroup': 'Nvisits', 'order': filtorder[f],
                       'caption': 'Number of visits in filter %s, %s.' % (f, propCaption)}
        histMerge = {'color': colors[f], 'label': '%s' % (f),
                     'binsize': 5,
                     'xMin': nvisitsRange['all'][f][0], 'xMax': nvisitsRange['all'][f][1],
                     'legendloc': 'upper right'}
        bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                            displayDict=displayDict, runName=runName, metadata=metadata,
                                            summaryMetrics=summaryStats)
        mergedHistDict['NVisits'].addBundle(bundle, plotDict=histMerge)
        bundleList.append(bundle)
        # Coadded depth.
        metric = metrics.Coaddm5Metric()
        plotDict = {'zp': benchmarkVals['coaddedDepth'][f], 'xMin': -0.8, 'xMax': 0.8,
                    'xlabel': 'coadded m5 - %.1f' % benchmarkVals['coaddedDepth'][f]}
        summaryStats = allStats
        histMerge = {'legendloc': 'upper right', 'color': colors[f], 'label': '%s' % f, 'binsize': .02,
                     'xlabel': 'coadded m5 - benchmark value'}
        caption = ('Coadded depth in filter %s, with %s value subtracted (%.1f), %s. '
                   % (f, benchmark, benchmarkVals['coaddedDepth'][f], propCaption))
        caption += 'More positive numbers indicate fainter limiting magnitudes.'
        displayDict = {'group': depthgroup, 'subgroup': 'Coadded Depth',
                       'order': filtorder[f], 'caption': caption}
        bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                            displayDict=displayDict, runName=runName, metadata=metadata,
                                            summaryMetrics=summaryStats)
        mergedHistDict['coaddm5'].addBundle(bundle, plotDict=histMerge)
        bundleList.append(bundle)
        # Effective time.
        metric = metrics.TeffMetric(metricName='Normalized Effective Time', normed=True,
                                    fiducialDepth=benchmarkVals['singleVisitDepth'])
        plotDict = {'xMin': 0.1, 'xMax': 1.1}
        summaryStats = allStats
        histMerge = {'legendLoc': 'upper right', 'color': colors[f], 'label': '%s' % f, 'binsize': 0.02}
        caption = ('"Time Effective" in filter %s, calculated with fiducial single-visit depth of %s mag. '
                   % (f, benchmarkVals['singleVisitDepth'][f]))
        caption += 'Normalized by the fiducial time effective, if every observation was at '
        caption += 'the fiducial depth.'
        displayDict = {'group': depthgroup, 'subgroup': 'Time Eff.',
                       'order': filtorder[f], 'caption': caption}
        bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                            displayDict=displayDict, runName=runName, metadata=metadata,
                                            summaryMetrics=summaryStats)
        mergedHistDict['NormEffTime'].addBundle(bundle, plotDict=histMerge)
        bundleList.append(bundle)

    # Put in a z=0.5 Type Ia SN, based on Cambridge 2015 workshop notebook.
    # Check for 1) detection in any band, 2) detection on the rise in any band,
    # 3) good characterization
    peaks = {'uPeak': 25.9, 'gPeak': 23.6, 'rPeak': 22.6, 'iPeak': 22.7, 'zPeak': 22.7, 'yPeak': 22.8}
    peakTime = 15.
    transDuration = peakTime + 30.  # Days
    metric = metrics.TransientMetric(riseSlope=-2. / peakTime, declineSlope=1.4 / 30.0,
                                     transDuration=transDuration, peakTime=peakTime,
                                     surveyDuration=runLength,
                                     metricName='SNDetection', **peaks)
    caption = 'Fraction of z=0.5 type Ia SN that are detected in any filter'
    displayDict = {'group': transgroup, 'subgroup': 'Detected', 'caption': caption}
    sqlconstraint = ''
    metadata = '' + slicermetadata
    plotDict = {}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName, metadata=metadata)
    bundleList.append(bundle)

    metric = metrics.TransientMetric(riseSlope=-2. / peakTime, declineSlope=1.4 / 30.0,
                                     transDuration=transDuration, peakTime=peakTime,
                                     surveyDuration=runLength,
                                     nPrePeak=1, metricName='SNAlert', **peaks)
    caption = 'Fraction of z=0.5 type Ia SN that are detected pre-peak in any filter'
    displayDict = {'group': transgroup, 'subgroup': 'Detected on the rise', 'caption': caption}
    plotDict = {}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName, metadata=metadata)
    bundleList.append(bundle)

    metric = metrics.TransientMetric(riseSlope=-2. / peakTime, declineSlope=1.4 / 30.,
                                     transDuration=transDuration, peakTime=peakTime,
                                     surveyDuration=runLength, metricName='SNLots',
                                     nFilters=3, nPrePeak=3, nPerLC=2, **peaks)
    caption = 'Fraction of z=0.5 type Ia SN that are observed 6 times, 3 pre-peak, '
    caption += '3 post-peak, with observations in 3 filters'
    displayDict = {'group': transgroup, 'subgroup': 'Well observed', 'caption': caption}
    sqlconstraint = 'filter="r" or filter="g" or filter="i" or filter="z" '
    plotDict = {}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName, metadata=metadata)
    bundleList.append(bundle)

    # Good seeing in r/i band metrics, including in first/second years.
    order = 0
    for tcolor, tlabel, timespan in zip(['k', 'g', 'r'], ['10 years', '1 year', '2 years'],
                                        ['', ' and night<=365', ' and night<=730']):
        order += 1
        for f in (['r', 'i']):
            sqlconstraint = 'filter = "%s" %s' % (f, timespan)
            propCaption = '%s band, all proposals %s, over %s.' % (f, slicermetadata, tlabel)
            metadata = '%s band, %s' % (f, tlabel) + slicermetadata
            seeing_limit = 0.7
            airmass_limit = 1.2
            metric = metrics.MinMetric(col=seeingCol)
            summaryStats = allStats
            plotDict = {'xMin': 0.35, 'xMax': 1.5, 'color': tcolor}
            displayDict = {'group': seeinggroup, 'subgroup': 'Best Seeing',
                           'order': filtorder[f] * 100 + order,
                           'caption': 'Minimum FWHMgeom values in %s.' % (propCaption)}
            histMerge = {'label': '%s %s' % (f, tlabel), 'color': tcolor,
                         'binsize': 0.03, 'xMin': 0.35, 'xMax': 1.5, 'legendloc': 'upper right'}
            bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                                displayDict=displayDict, runName=runName, metadata=metadata,
                                                summaryMetrics=summaryStats)
            mergedHistDict['Minseeing'].addBundle(bundle, plotDict=histMerge)
            bundleList.append(bundle)

            metric = metrics.FracAboveMetric(col=seeingCol, cutoff=seeing_limit)
            summaryStats = allStats
            plotDict = {'xMin': 0, 'xMax': 1.1, 'color': tcolor}
            displayDict = {'group': seeinggroup, 'subgroup': 'Good seeing fraction',
                           'order': filtorder[f] * 100 + order,
                           'caption': 'Fraction of total images with FWHMgeom worse than %.1f, in %s'
                           % (seeing_limit, propCaption)}
            histMerge = {'color': tcolor, 'label': '%s %s' % (f, tlabel),
                         'binsize': 0.05, 'legendloc': 'upper right'}
            bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                                displayDict=displayDict, runName=runName, metadata=metadata,
                                                summaryMetrics=summaryStats)
            mergedHistDict['seeingAboveLimit'].addBundle(bundle, plotDict=histMerge)
            bundleList.append(bundle)

            metric = metrics.MinMetric(col='airmass')
            plotDict = {'xMin': 1, 'xMax': 1.5, 'color': tcolor}
            summaryStats = allStats
            displayDict = {'group': airmassgroup, 'subgroup': 'Best Airmass',
                           'order': filtorder[f] * 100 + order, 'caption':
                           'Minimum airmass in %s.' % (propCaption)}
            histMerge = {'color': tcolor, 'label': '%s %s' % (f, tlabel),
                         'binsize': 0.03, 'legendloc': 'upper right'}
            bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                                displayDict=displayDict, runName=runName, metadata=metadata,
                                                summaryMetrics=summaryStats)
            mergedHistDict['minAirmass'].addBundle(bundle, plotDict=histMerge)
            bundleList.append(bundle)

            metric = metrics.FracAboveMetric(col='airmass', cutoff=airmass_limit)
            plotDict = {'xMin': 0, 'xMax': 1, 'color': tcolor}
            summaryStats = allStats
            displayDict = {'group': airmassgroup, 'subgroup': 'Low airmass fraction',
                           'order': filtorder[f] * 100 + order, 'caption':
                           'Fraction of total images with airmass higher than %.2f, in %s'
                           % (airmass_limit, propCaption)}
            histMerge = {'color': tcolor, 'label': '%s %s' % (
                f, tlabel), 'binsize': 0.05, 'legendloc': 'upper right'}

            bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                                displayDict=displayDict, runName=runName, metadata=metadata,
                                                summaryMetrics=summaryStats)
            mergedHistDict['fracAboveAirmass'].addBundle(bundle, plotDict=histMerge)
            bundleList.append(bundle)

# SNe metrics from UK workshop.


    peaks = {'uPeak': 25.9, 'gPeak': 23.6, 'rPeak': 22.6, 'iPeak': 22.7, 'zPeak': 22.7, 'yPeak': 22.8}
    peakTime = 15.
    transDuration = peakTime + 30.  # Days
    metric = metrics.TransientMetric(riseSlope=-2. / peakTime, declineSlope=1.4 / 30.0,
                                     transDuration=transDuration, peakTime=peakTime,
                                     surveyDuration=runLength,
                                     metricName='SNDetection', **peaks)
    caption = 'Fraction of z=0.5 type Ia SN that are detected at any point in their light curve in any filter'
    displayDict = {'group': sngroup, 'subgroup': 'Detected', 'caption': caption}
    sqlconstraint = ''
    plotDict = {}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName)
    bundleList.append(bundle)

    metric = metrics.TransientMetric(riseSlope=-2. / peakTime, declineSlope=1.4 / 30.0,
                                     transDuration=transDuration, peakTime=peakTime,
                                     surveyDuration=runLength,
                                     nPrePeak=1, metricName='SNAlert', **peaks)
    caption = 'Fraction of z=0.5 type Ia SN that are detected pre-peak in any filter'
    displayDict = {'group': sngroup, 'subgroup': 'Detected on the rise', 'caption': caption}
    plotDict = {}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName)
    bundleList.append(bundle)

    metric = metrics.TransientMetric(riseSlope=-2. / peakTime, declineSlope=1.4 / 30.,
                                     transDuration=transDuration, peakTime=peakTime,
                                     surveyDuration=runLength, metricName='SNLots',
                                     nFilters=3, nPrePeak=3, nPerLC=2, **peaks)
    caption = 'Fraction of z=0.5 type Ia SN that are observed 6 times, 3 pre-peak, '
    caption += '3 post-peak, with observations in 3 filters'
    displayDict = {'group': sngroup, 'subgroup': 'Well observed', 'caption': caption}
    sqlconstraint = 'filter="r" or filter="g" or filter="i" or filter="z" '
    plotDict = {}
    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName)
    bundleList.append(bundle)

    propIDOrderDict = {}
    orderVal = 100
    for propID in propids:
        propIDOrderDict[propID] = orderVal
        orderVal += 100

    # Full range of dates:
    metric = metrics.FullRangeMetric(col='observationStartMJD')
    plotFuncs = [plots.HealpixSkyMap(), plots.HealpixHistogram()]
    caption = 'Time span of survey.'
    sqlconstraint = ''
    plotDict = {}
    displayDict = {'group': rangeGroup, 'caption': caption}

    bundle = metricBundles.MetricBundle(metric, slicer, sqlconstraint, plotDict=plotDict,
                                        displayDict=displayDict, runName=runName)
    bundleList.append(bundle)
    for f in filters:
        for propid in propids:
            displayDict = {'group': rangeGroup, 'subgroup': propids[propid], 'caption': caption,
                           'order': filtorder[f]}
            md = '%s, %s' % (f, propids[propid])
            sql = 'filter="%s" and proposalId=%i' % (f, propid)
            bundle = metricBundles.MetricBundle(metric, slicer, sql, plotDict=plotDict,
                                                metadata=md, plotFuncs=plotFuncs,
                                                displayDict=displayDict, runName=runName)
            bundleList.append(bundle)

    # Alt az plots
    slicer = slicers.HealpixSlicer(nside=64, latCol='zenithDistance', lonCol='azimuth', useCache=False)
    metric = metrics.CountMetric('observationStartMJD', metricName='Nvisits as function of Alt/Az')
    plotDict = {}
    plotFuncs = [plots.LambertSkyMap()]
    displayDict = {'group': altAzGroup, 'caption': 'Alt Az pointing distribution'}
    for f in filters:
        for propid in propids:
            displayDict = {'group': altAzGroup, 'subgroup': propids[propid],
                           'caption': 'Alt Az pointing distribution',
                           'order': filtorder[f]}
            md = '%s, %s' % (f, propids[propid])
            sql = 'filter="%s" and proposalId=%i' % (f, propid)
            bundle = metricBundles.MetricBundle(metric, slicer, sql, plotDict=plotDict,
                                                plotFuncs=plotFuncs, metadata=md,
                                                displayDict=displayDict, runName=runName)
            bundleList.append(bundle)

    sql = ''
    md = 'all observations'
    displayDict = {'group': altAzGroup, 'subgroup': 'All Observations',
                   'caption': 'Alt Az pointing distribution'}
    bundle = metricBundles.MetricBundle(metric, slicer, sql, plotDict=plotDict,
                                        plotFuncs=plotFuncs, metadata=md,
                                        displayDict=displayDict, runName=runName)
    bundleList.append(bundle)

    # Median inter-night gap (each and all filters)
    slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
    metric = metrics.InterNightGapsMetric(metricName='Median Inter-Night Gap')
    sqls = ['filter = "%s"' % f for f in filters]
    orders = [filtorder[f] for f in filters]
    orders.append(0)
    sqls.append('')
    for sql, order in zip(sqls, orders):
        displayDict = {'group': intergroup, 'subgroup': 'Median Gap', 'caption': 'Median gap between days',
                       'order': order}
        bundle = metricBundles.MetricBundle(metric, slicer, sql, displayDict=displayDict, runName=runName)
        bundleList.append(bundle)

    # Max inter-night gap in r and all bands
    dslicer = slicers.HealpixSlicer(nside=nside, lonCol='ditheredRA', latCol='ditheredDec')
    metric = metrics.InterNightGapsMetric(metricName='Max Inter-Night Gap', reduceFunc=np.max)

    plotDict = {'percentileClip': 95.}
    for sql, order in zip(sqls, orders):
        displayDict = {'group': intergroup, 'subgroup': 'Max Gap', 'caption': 'Max gap between nights',
                       'order': order}
        bundle = metricBundles.MetricBundle(metric, dslicer, sql, displayDict=displayDict,
                                            plotDict=plotDict, runName=runName)
        bundleList.append(bundle)

    # largest phase gap for periods
    periods = [0.1, 1.0, 10., 100.]
    sqls = {'u': 'filter = "u"', 'r': 'filter="r"',
            'g,r,i,z': 'filter="g" or filter="r" or filter="i" or filter="z"',
            'all': ''}

    for sql in sqls:
        for period in periods:
            displayDict = {'group': phaseGroup,
                           'subgroup': 'period=%.2f days, filter=%s' % (period, sql),
                           'caption': 'Maximum phase gaps'}
            metric = metrics.PhaseGapMetric(nPeriods=1, periodMin=period, periodMax=period,
                                            metricName='PhaseGap, %.1f' % period)
            bundle = metricBundles.MetricBundle(metric, slicer, sqls[sql],
                                                displayDict=displayDict, runName=runName)
            bundleList.append(bundle)

    # NEO XY plots
    slicer = slicers.UniSlicer()
    metric = metrics.PassMetric(metricName='NEODistances')
    stacker = stackers.NEODistStacker()
    stacker2 = stackers.EclipticStacker()
    for f in filters:
        plotFunc = plots.NeoDistancePlotter(eclipMax=10., eclipMin=-10.)
        caption = 'Observations within 10 degrees of the ecliptic. Distance an H=22 NEO would be detected'
        displayDict = {'group': NEOGroup, 'subgroup': 'xy', 'order': filtorder[f],
                       'caption': caption}
        plotDict = {}
        sqlconstraint = 'filter = "%s"' % (f)
        bundle = metricBundles.MetricBundle(metric, slicer,
                                            sqlconstraint, displayDict=displayDict,
                                            stackerList=[stacker, stacker2],
                                            plotDict=plotDict,
                                            plotFuncs=[plotFunc])
        noSaveBundleList.append(bundle)

    # Solar elongation
    sqls = ['filter = "%s"' % f for f in filters]
    orders = [filtorder[f] for f in filters]
    sqls.append('')
    orders.append(0)
    for sql, order in zip(sqls, orders):
        plotFuncs = [plots.HealpixSkyMap(), plots.HealpixHistogram()]
        displayDict = {'group': NEOGroup, 'subgroup': 'Solar Elongation',
                       'caption': 'Median solar elongation in degrees', 'order': order}
        metric = metrics.MedianMetric('solarElong')
        slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
        bundle = metricBundles.MetricBundle(metric, slicer, sql, displayDict=displayDict,
                                            plotFuncs=plotFuncs)
        bundleList.append(bundle)

        plotFuncs = [plots.HealpixSkyMap(), plots.HealpixHistogram()]
        displayDict = {'group': NEOGroup, 'subgroup': 'Solar Elongation',
                       'caption': 'Minimum solar elongation in degrees', 'order': order}
        metric = metrics.MinMetric('solarElong')
        slicer = slicers.HealpixSlicer(nside=nside, lonCol=lonCol, latCol=latCol)
        bundle = metricBundles.MetricBundle(metric, slicer, sql, displayDict=displayDict,
                                            plotFuncs=plotFuncs)
        bundleList.append(bundle)

    return (metricBundles.makeBundlesDictFromList(bundleList), mergedHistDict,
            metricBundles.makeBundlesDictFromList(noSaveBundleList))
コード例 #4
0
                        help="Skip the metrics that do not get saved as npz files.")

    parser.set_defaults()
    args, extras = parser.parse_known_args()

    # Build metric bundles.

    (bundleDict, mergedHistDict, noSaveBundleDict) = makeBundleList(args.dbFile, nside=args.nside,
                                                                    lonCol=args.lonCol, latCol=args.latCol,
                                                                    benchmark=args.benchmark,
                                                                    seeingCol=args.seeingCol)

    # Set up / connect to resultsDb.
    resultsDb = db.ResultsDb(outDir=args.outDir)
    # Connect to opsimdb.
    opsdb = db.OpsimDatabaseV4(args.dbFile)

    if args.runNoSave:
        group = metricBundles.MetricBundleGroup(noSaveBundleDict, opsdb, saveEarly=False,
                                                outDir=args.outDir, resultsDb=resultsDb)
        group.runAll(clearMemory=True, plotNow=True)
        del group, noSaveBundleDict

    # Set up metricBundleGroup.
    group = metricBundles.MetricBundleGroup(bundleDict, opsdb,
                                            outDir=args.outDir, resultsDb=resultsDb)
    # Read or run to get metric values.
    if args.plotOnly:
        group.readAll()
    else:
        group.runAll()
コード例 #5
0
    args = parser.parse_args()

    if args.db is None:
        if os.path.isfile('trackingDb_sqlite.db'):
            os.remove('trackingDb_sqlite.db')
        db_files = glob.glob('*.db')
    else:
        db_files = [args.db]
    run_names = [
        os.path.basename(name).replace('.db', '') for name in db_files
    ]

    for filename, name in zip(db_files, run_names):
        if os.path.isdir(name + '_glance'):
            shutil.rmtree(name + '_glance')
        opsdb = db.OpsimDatabaseV4(filename)
        colmap = batches.ColMapDict()

        bdict = {}
        bdict.update(batches.glanceBatch(colmap, name))
        bdict.update(batches.fOBatch(colmap, name))
        resultsDb = db.ResultsDb(outDir=name + '_glance')
        group = mb.MetricBundleGroup(bdict,
                                     opsdb,
                                     outDir=name + '_glance',
                                     resultsDb=resultsDb,
                                     saveEarly=False)
        group.runAll(clearMemory=True, plotNow=True)
        resultsDb.close()
        opsdb.close()
        db.addRunToDatabase(name + '_glance', 'trackingDb_sqlite.db', None,
コード例 #6
0
ファイル: testOpsimDb.py プロジェクト: yuchaz/sims_maf
 def setUp(self):
     self.database = os.path.join(getPackageDir('sims_data'), 'OpSimData',
                                  'astro-lsst-01_2014.db')
     self.oo = db.OpsimDatabaseV4(database=self.database)
コード例 #7
0
import lsst.sims.maf.batches as batches
import lsst.sims.maf.db as db
import lsst.sims.maf.metricBundles as mb

if __name__ == "__main__":
    """
    Run the glance batch on all .db files in a directory.
    """
    db_files = glob.glob('*.db')
    run_names = [name.replace('.db', '') for name in db_files]
    if os.path.isfile('trackingDb_sqlite.db'):
        os.remove('trackingDb_sqlite.db')
    for name in run_names:
        if os.path.isdir(name):
            shutil.rmtree(name)
        opsdb = db.OpsimDatabaseV4(name + '.db')
        colmap = batches.ColMapDict('OpsimV4')

        bdict = {}
        bdict.update(batches.glanceBatch(colmap, name, slicer_camera='ComCam'))
        bdict.update(batches.fOBatch(colmap, name))
        resultsDb = db.ResultsDb(outDir=name)
        group = mb.MetricBundleGroup(bdict,
                                     opsdb,
                                     outDir=name,
                                     resultsDb=resultsDb)
        group.runAll()
        group.plotAll()
        resultsDb.close()
        opsdb.close()
        db.addRunToDatabase(name, 'trackingDb_sqlite.db', None, name, '', '',
コード例 #8
0
ファイル: fbsMovie.py プロジェクト: hsnee/sims_maf
    # Check if user passed directory + filename as opsimDb.
    if len(os.path.dirname(args.opsimDb)) > 0:
        raise Exception(
            'OpsimDB should be just the filename of the sqlite file (not %s). Use --dbDir.'
            % (args.opsimDb))

    opsimName = args.opsimDb.replace('_sqlite.db', '')
    opsimName = opsimName.replace('.db', '')
    metadata = args.sqlConstraint.replace('=', '').replace(
        'filter', '').replace("'", '').replace('"', '').replace('/', '.')

    if not args.skipComp:
        verbose = False
        # Get db connection info, and connect to database.
        dbfile = os.path.join(args.dbDir, args.opsimDb)
        oo = db.OpsimDatabaseV4(dbfile)
        sqlconstraint = args.sqlConstraint
        # Fetch the data from opsim.
        simdata, fields = getData(oo, sqlconstraint)
        # Set up the time bins for the movie slicer.
        start_date = simdata['observationStartMJD'][0]
        if args.movieStepsize == 0:
            bins = simdata['observationStartMJD']
        else:
            end_date = simdata['observationStartMJD'].max()
            bins = np.arange(start_date, end_date + args.movieStepSize / 2.0,
                             args.movieStepSize, float)
        if args.addPreviousObs:
            # Go back and grab all the data, including all previous observations.
            if "night =" in sqlconstraint:
                sqlconstraint = sqlconstraint.replace("night =", "night <=")