dataspace2d

sherpa.ui.dataspace2d(dims, id=None, dstype=<class 'sherpa.data.Data2D'>)

Create the independent axis for a 2D data set.

Create an “empty” two-dimensional data set by defining the grid on which the points are defined (the independent axis). The values are set to 0.

Parameters:
  • dims (sequence of 2 number) – The dimensions of the grid in (width,height) order.
  • id (int or str, optional) – The identifier for the data set to use. If not given then the default identifier is used, as returned by get_default_id.
  • dstype (data class to use, optional) – What type of data is to be used. Supported values include Data2D (the default) and Data2DInt.

See also

dataspace1d()
Create the independent axis for a 1D data set.
get_dep()
Return the dependent axis of a data set.
get_indep()
Return the independent axes of a data set.
set_dep()
Set the dependent axis of a data set.

Examples

Create a 200 pixel by 150 pixel grid (number of columns by number of rows) and display it (each pixel has a value of 0):

>>> dataspace2d([200,150])
>>> image_data()

Create a data space called “fakeimg”:

>>> dataspace2d([nx,ny], id="fakeimg")