class MatplotlibPdfWrapper:
## create new matplotlib wrapper. This is a convinient class
# to create a pdf page with multiple pages.
def __init__(self, filename = 'all.pdf' ):
self._pdf = PdfPages( filename )
self._helper = MatplotlibHelper()
## add a view to the existing pdf page
# @param json block of data that contains options.
# @param resources array of common.writable.*
# @return nothing, but mutates internal state
def addView(self, json, resources):
title = json['title'] if 'title' in json else ''
type = json['plot'] if 'plot' in json else 'line'
sources = json['source']
days = json['days'] if 'days' in json else None
width = json['width']/96.0 if 'width' in json else 20
height = json['height']/96.0 if 'height' in json else 12
log.info( 'plotting {0}'.format(title) )
objects = []
for key in sources:
res = resources.selectOne(key)
if key is None:
log.error( 'attempting to plot resource {0}, but no such resource exists'.format(key) )
elif isinstance( res, FullBalance ):
objects.append( (key, res.value) )
else:
log.error( 'attempting to plot resource {0}, but is of unsupported type {1}'
.format( key, res.__class__.__name__ ) )
if len(objects) == 0:
log.error( 'skipping plot titled {0} because there are no objects to plot...'.format( title ) )
return
ret = self._helper.plot( type, objects, days )
if ret is None:
log.error( 'unknown plot type {0}'.format(type) )
return
fig, ax = ret
fig.set_figheight(height)
fig.set_figwidth(width)
if len(title):
ax.set_title(title, fontsize=18)
self._pdf.savefig( bbox_inches='tight', dpi=160 )
## save and close the plot.
# implementation must call this function, or a memory leak will occur.
def finalize(self):
self._pdf.close()
plt.close()
def __init__(self, filename = 'all.pdf' ):
self._pdf = PdfPages( filename )
self._helper = MatplotlibHelper()
def __init__(self, extension, filename ):
self._ext = extension
self._filename = filename
self._helper = MatplotlibHelper()