# 2016\_11\_04 visualization meeting **URL:** \ **Category:** Camera-DM Visualization\ **Created:** [November 3, 2016, 10:54pm UTC](https://www.rubin.community/t/2016-11-04-visualization-meeting/1375 "2016-11-03T22:54:41Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![jjt](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/jjt/32/125_2.png) [@jjt](https://www.rubin.community/u/jjt)\ **Post date:** [November 3, 2016, 10:54pm UTC](https://www.rubin.community/t/2016-11-04-visualization-meeting/1375/1 "2016-11-03T22:54:41Z")
Bluejeans: 107541143 **Agenda:** - Histogram and JS API status. - SLAC test stand **Notes:** - To speed progress, UIUC will start having weekly group hack sessions. - Cooling is not yet reliable in the room that houses the SLAC test stand. @marshall will install visualization SW this coming week. **Action:** @weiren2: Update installation documentation. - An inconsistency between the old FF API’s region parameters and DS9’s was resolved in the new API (led to some brief confusion). ---
**Author:** ![tony\_johnson](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/tony_johnson/32/124_2.png) [@tony\_johnson](https://www.rubin.community/u/tony_johnson)\ **Post date:** [November 4, 2016, 2:55pm UTC](https://www.rubin.community/t/2016-11-04-visualization-meeting/1375/2 "2016-11-04T14:55:14Z")
Hi Jon, I am afraid I will miss the meeting again today since I have family matters I have to take care of today. Stuart should be able to update you on the status of the IR2 visualization workstations. TS8 at BNL started taking test images again yesterday and I will transfer them onto those workstations as soon as possible. ---
**Author:** ![victor\_ren](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/victor_ren/32/281_2.png) [@victor\_ren](https://www.rubin.community/u/victor_ren)\ **Post date:** [November 4, 2016, 3:32pm UTC](https://www.rubin.community/t/2016-11-04-visualization-meeting/1375/3 "2016-11-04T15:32:36Z")
@tatianag @jbpagliuco Current issues I have in Firefly: - I could draw a box region, but the location of the box is changed even though I’m using the same DS9 region format in the old API. Maybe the coordinates are defined differently in the new API? The boundary are not longer aligned. ![](https://us1.discourse-cdn.com/flex002/uploads/rubin/original/1X/de1a3342cca2eaf124a793854be2817393a52762.png) - Selecting a region will produce undefined `TypeError`. I’m not sure if this is a bug, it’s probably because calling the new API function incorrectly. ---
**Author:** ![tatianag](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/tatianag/32/121_2.png) [@tatianag](https://www.rubin.community/u/tatianag)\ **Post date:** [November 4, 2016, 6:12pm UTC](https://www.rubin.community/t/2016-11-04-visualization-meeting/1375/4 "2016-11-04T18:12:07Z")
@victor_ren @jbpagliuco, you are right. There might have been confusion in older Firefly about x, y in box region definition _“box x y width height angle”_. The [standard](http://ds9.si.edu/doc/ref/region.html) is not explicit about it. But I found at least [one reference](http://www.public.asu.edu/~rjansen/linux/mkmask_hlp.html), which states x, y are the center and we have confirmed inside ds9 that x,y are the center point. So please go with this definition. ---
**Author:** ![roby](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/roby/32/54_2.png) [@roby](https://www.rubin.community/u/roby)\ **Post date:** [November 4, 2016, 6:33pm UTC](https://www.rubin.community/t/2016-11-04-visualization-meeting/1375/5 "2016-11-04T18:33:31Z")
Sorry about that. I think I did it wrong in the older Firefly. The new version is more consistent with DS9. ---
**Author:** ![victor\_ren](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/victor_ren/32/281_2.png) [@victor\_ren](https://www.rubin.community/u/victor_ren)\ **Post date:** [November 7, 2016, 7:32am UTC](https://www.rubin.community/t/2016-11-04-visualization-meeting/1375/6 "2016-11-07T07:32:24Z")
@marshall The documentation of [installation on local machine](https://github.com/lsst-camera-visualization/lsst_firefly#on-local-machine) is updated. Let me know if any step is not clear.