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Last modified: December 2013

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

get_coord

Context: data

Synopsis

Return the coordinate system of an image

Syntax

get_coord( [id] )

Description

The get_coord() command returns a string identifying the coordinate system of an image loaded in a Sherpa session, by data set ID. The possible string values are 'logical', 'physical', 'world', 'image' (same as logical), and 'wcs' (same as world). The set_coord() command can be used to change the coordinate system of an image.

  • id - the id of the 2-dimensional data set to use; if not given, uses the default dataset id (id=1 by default, see "ahelp get_default_id")

Example 1

sherpa> get_coord()

When called with no arguments, the get_coord() command returns the coordinate system of the default data set 1.

sherpa> get_coord()
          'logical'

Example 2

sherpa> get_coord(3)

A string identifying the coordinate system of data set 3 is returned.

sherpa> get_coord(3)
          'world'

Bugs

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

See Also

confidence
get_conf, get_covar, get_int_proj, get_int_unc, get_proj, get_reg_proj, get_reg_unc
contrib
get_chart_spectrum
data
get_areascal, get_arf, get_arf_plot, get_axes, get_backscal, get_bkg, get_bkg_plot, get_bkg_scale, get_counts, get_data, get_data_plot, get_dep, get_dims, get_error, get_exposure, get_grouping, get_indep, get_quality, get_rmf, get_specresp, get_staterror, get_syserror
filtering
get_filter
fitting
calc_stat_info, get_fit, get_stat_info
info
get_default_id, list_stats
methods
get_draws, get_iter_method_name, get_iter_method_opt, get_method
modeling
get_model, get_model_component, get_model_component_image, get_model_component_plot, get_model_plot, get_num_par, get_order_plot, get_par, get_pileup_model, get_response, get_source, get_source_component_image, get_source_component_plot, image_source
plotting
get_split_plot
psfs
get_kernel, get_psf
statistics
get_chisqr_plot, get_delchi_plot, get_prior, get_sampler, get_stat
utilities
get_analysis, get_rate
visualization
get_ratio, get_resid, image_getregion

Last modified: December 2013
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