A problem with the tutorial at https://pipelines.lsst.io/getting-started/display.html : ds9 doesn’t display pretty pictures.
An instance of ds9 was fired up in a separate terminal. A Pyraf session chatted to it without issue. Working through the tutorial, all seemed ok up to and including
>>> display = afwDisplay.getDisplay()
but then
>>> display.mtv(calexp)
ds9 doesn't appear to be running (XPA:
File "python/lsst/display/ds9/xpa.cc", line 115, in const char* lsst::display::ds9::{anonymous}::XPASet1(XPA, char*, char*, char*, char*, int)
XPASet returned 0 {0}
lsst::pex::exceptions::IoError: 'XPASet returned 0'
, (;iconify no; raise)), I'll try to exec it for you
Error in startup script: can't find package xml
while executing
"package require xml"
("x11" arm line 10)
invoked from within
"switch $ds9(wm) {
x11 {
# set to absolute path so that if -cd command is used,
# so we can still find our files
set ds9(root) [file normalize [..."
(file "/usr/share/saods9/library/ds9.tcl" line 195)
XPA$ERROR no 'xpaset' access points match template: ds9
Error writing image: : Broken pipe
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/src/lsst_stack/stack/miniconda3-4.5.4-fcd27eb/Linux64/afw/17.0.1/python/lsst/afw/display/interface.py", line 551, in mtv
self._impl._mtv(data.getImage(), data.getMask(), wcs, title)
File "/usr/local/src/lsst_stack/stack/miniconda3-4.5.4-fcd27eb/Linux64/display_ds9/17.0.1/python/lsst/display/ds9/ds9.py", line 306, in _mtv
_i_mtv(image, wcs, title, False)
File "/usr/local/src/lsst_stack/stack/miniconda3-4.5.4-fcd27eb/Linux64/display_ds9/17.0.1/python/lsst/display/ds9/ds9.py", line 485, in _i_mtv
raise e
File "/usr/local/src/lsst_stack/stack/miniconda3-4.5.4-fcd27eb/Linux64/display_ds9/17.0.1/python/lsst/display/ds9/ds9.py", line 478, in _i_mtv
displayLib.writeFitsImage(pfd.fileno(), data, wcs, title)
lsst.pex.exceptions.wrappers.RuntimeError:
File "python/lsst/afw/display/simpleFits.cc", line 441, in void lsst::afw::display::writeBasicFits(int, const ImageT&, const lsst::afw::geom::SkyWcs*, const char*) [with ImageT = lsst::afw::image::Image<float>]
Error writing data for row 10 {0}
lsst::pex::exceptions::RuntimeError: 'Error writing data for row 10'
>>>
It most certainly is running.
Attempting to fire up a ds9 from the same shell as the one running the tutorial:
Error in startup script: can't find package xml
while executing
"package require xml"
("x11" arm line 10)
invoked from within
"switch $ds9(wm) {
x11 {
# set to absolute path so that if -cd command is used,
# so we can still find our files
set ds9(root) [file normalize [..."
(file "/usr/share/saods9/library/ds9.tcl" line 195)
(lsst-scipipe-fcd27eb) pcl@thoth:~/Astro/lsst$
which confuses me. Why does ds9 work in one environment but not the other? Yes, I had run setup display_ds9 as gleaned from another post where ds9 problems were reported.
Ho hum. We’ll get there in the end, I’m sure.