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Last modified: December 2013

URL: http://cxc.harvard.edu/sherpa/ahelp/dataspace2d.html
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AHELP for CIAO 4.6 Sherpa v2

dataspace2d

Context: data

Synopsis

Create a blank 2D dataset

Syntax

dataspace2d( dims, [id,dstype=DataIMG] )

Description

The dataspace2d command creates a blank 2D image with a grid in logical coordinates according to the dimensional array argument (dims). To create 1D data, use the dataspace1d command ("ahelp dataspace1d") .

  • dims - array of image dimensions, i.e. [width,height]
  • id - the id of the new dataset; if not given, uses the default dataset id (id=1 by default, see "ahelp get_default_id")
  • dstype - dataset type: DataIMG (the default), Data2D, or Data2DInt

Example 1

sherpa> dataspace2d([216,216])

Create a blank image with dimensions 216x216.

Example 2

sherpa> dataspace2d([50,100], id="newimg")

Create a blank image that is 50x100 and give it an id of "newimg".

Bugs

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.

See Also

data
copy_data, dataspace1d, delete_data, fake, get_axes, get_bkg_plot, get_counts, get_data, get_data_plot, get_dep, get_dims, get_error, get_quality, get_specresp, get_staterror, get_syserror, group, load_arf, load_arrays, load_ascii, load_bkg, load_bkg_arf, load_bkg_rmf, load_data, load_grouping, load_image, load_multi_arfs, load_multi_rmfs, load_pha, load_quality, load_rmf, load_staterror, load_syserror, load_table, pack_image, pack_pha, pack_table, set_data, set_quality, ungroup, unpack_arf, unpack_arrays, unpack_ascii, unpack_bkg, unpack_data, unpack_image, unpack_pha, unpack_rmf, unpack_table
filtering
get_filter, load_filter, set_filter
info
get_default_id, list_bkg_ids, list_data_ids, list_response_ids
modeling
add_model, add_user_pars, clean, load_table_model, load_template_model, load_user_model, save_model, save_source
plotting
plot_data, set_xlinear, set_xlog, set_ylinear, set_ylog
saving
save_arrays, save_data, save_delchi, save_error, save_filter, save_grouping, save_image, save_pha, save_quality, save_resid, save_staterror, save_syserror, save_table
statistics
load_user_stat
utilities
calc_data_sum, calc_data_sum2d, calc_ftest, calc_kcorr, calc_mlr, calc_model_sum2d, calc_source_sum2d, get_rate
visualization
contour, contour_data, contour_ratio, get_ratio, get_resid, histogram1d, histogram2d, image_data, rebin

Last modified: December 2013
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