[GRASS-dev] [GRASS GIS] #3152: g.gui.animation issues with stvds and list of vector maps

[GRASS GIS]

#3152: g.gui.animation issues with stvds and list of vector maps
--------------------------+-----------------------------
  Reporter:  veroandreo   |      Owner:  grass-dev@…
      Type:  defect       |     Status:  new
  Priority:  normal       |  Milestone:  7.2.0
 Component:  wxGUI        |    Version:  svn-trunk
Resolution:               |   Keywords:  g.gui.animation
       CPU:  Unspecified  |   Platform:  Linux
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Comment (by veroandreo):

 Replying to [comment:1 annakrat]:
 > Replying to [ticket:3152 veroandreo]:
 > > I want to create an animation for a weekly STVDS covering a total time
 span of 5 years. However, the STVDS only consist of 62 maps, given that
 there's no data in every week but only in those 62 weeks (summer weeks
 over the years).
 > >
 > > When I pass my STVDS to g.gui.animation (using the GUI or the
 > > CLI), I either get a lot of black screens for those time periods in
 which my STVDS has no maps or the last map with data remains there until a
 new map with data comes. Is there a way to only get the background raster
 in those periods without data, instead of the last vector with data???
 > > As these are cases of a disease, it has no sense (and it represents
 > > something that it is not true) to keep the last point for an X period
 of time until new cases appear.
 > >
 >
 > I am not sure how do you want it to be? In settings, Time tab there is
 option to not show no data, but I guess that's not what you want. If you
 don't want it to use the time information, load it as series of maps.

 Maybe I was not clear. I'll try better this time. So, I have weekly vector
 maps that represent disease cases. These cases appear only in certain
 weeks of the year. Then I register my weekly vectors of disease cases as a
 STVDS to make use of time information. However, none of the solutions
 provided in the animation is optimal to display this kind of data (stvds).
 If I choose to display no data time periods, I get black screens when
 there are no cases (most of the year). That makes the animation a bit
 ugly. On the other hand, if I choose not to display no data time periods,
 what I get is the last case that appeared frozen there for most of the
 year. And, as I said before, at least for this particular case, that is
 not correct nor desirable. It would mean that there's always someone
 reporting a disease case in that place, which is not true in the data.

 So, dunno if it is possible or not, but what I would expect is to only see
 the background raster I choose during those periods with no disease cases,
 i.e.: no frozen last vector map, only the raster I add as background.

 Well, loading as a list of maps ''kinda'' solves the issue of no data
 periods, because I loose time info which was the whole point...

 > > I thought that maybe only passing the list of 62 maps (not as a time
 > > series) would suffice, but I found I cannot use '?' in the GUI for
 > > the selection, and then I have to manually click on maps with no
 > > possibility to scroll. Is it feasible to add support for
 > > the '?' or a file parameter, as in other modules, to pass a file with
 the list of maps?
 >
 > The gui uses python regular expressions, so check what ? means there, it
 works but maybe it has different meaning?


 I found the equivalent for '????'. In python reg expressions is
 '[0-9][0-9][0-9][0-9]'. I should have tried harder before... but thanks
 for the hint :)

 >
 > >
 > > The next thing I tried was to pass the list of files with the CLI,
 using
 > >
 > > {{{
 > > g.gui.animation vector=`g.list type=vector mapset=.
 pattern=cases_20??_??_??_* separator=comma`
 > > }}}
 > >
 > > but I get the following error:
 > >
 > > {{{
 > > Traceback (most recent call last):
 > >   File "/home/veroandreo/software/grass-7.3.svn/dist.x86_64-pc-linux-
 gnu/scripts/g.gui.animation", line 141, in <module>
 > >     main()
 > >   File "/home/veroandreo/software/grass-7.3.svn/dist.x86_64-pc-linux-
 gnu/scripts/g.gui.animation", line 112, in main
 > >     layer.cmd = ['d.vect',
 'map={name=}'.format(name=vect.split(',')[0])]
 > > KeyError: 'name='
 > > }}}
 >
 > Thanks, I fixed that, please try again.

 It works now! Thanks much!

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3152#comment:2>
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