def new_dataset(self, key='dataset', undolist=None):
"""
Add a new Dataset object to the Project.
The `data` field contains a nearly empty numarray (1 row, 2
columns, all zero).
If no key is given, then one is created. If the key already
exists, then the method assures that it is unique within the
Project.
Returns newly created Dataset.
"""
if undolist is None:
undolist = self.journal
key = pdict.unique_key(self.datasets, key)
ds = Dataset()
pdict.setitem(self.datasets, key, ds)
ds.data = Table(nrows=1,ncols=2)
ds.data.column(0).designation = 'X'
ds.data.column(1).designation = 'Y'
self.sig_emit("notify::datasets")
ui = UndoInfo(self.remove_objects, [ds], False)
ui.describe("Create new Dataset '%s'" % key)
undolist.append(ui)
return ds
def rename_plot(self, xn_plot, new_key, undolist=None):
" Analogon to `rename_dataset`. "
if undolist is None:
undolist = self.journal
plotlist = [plot for plot in self.plots]
plot = self.get_plot(xn_plot)
plotlist.remove(plot)
new_key = pdict.unique_key(plotlist, new_key)
ui = UndoInfo(self.rename_plot, plot, plot.key)
ui.describe("Rename Plot")
try:
plot.key = new_key
except ValueError:
globals.app.error_msg(MSG['invalid_key'] % new_key)
return
undolist.append(ui)
return plot
def rename_dataset(self, xn_dataset, new_key, undolist=None):
"""
Rename a Dataset and make sure that its key is unique.
The name might be modified so if the key is important to you,
you might want to check it afterwards.
Returns the Dataset.
"""
if undolist is None:
undolist = self.journal
dataset = self.get_dataset(xn_dataset)
dslist = [ds for ds in self.datasets]
dslist.remove(dataset)
new_key = pdict.unique_key(dslist, new_key)
ui = UndoInfo(self.rename_dataset, dataset, dataset.key)
ui.describe("Rename Dataset")
try:
dataset.key = new_key
except ValueError, msg:
self.app.error_msg(DC['invalid_key'] % new_key)
return
