[GRASS-user] Itzi output: several questions

[Laurent C.]

Copy of my off-list answer.

2017-03-13 10:30 GMT-06:00 Laurent C. <lrntct at gmail.com>:
> Rich,
>
> Answers below.
>
> 2017-03-13 10:16 GMT-06:00 Rich Shepard <rshepard at appl-ecosys.com>:
>>   One model run has completed and I have several questions for which I do
>> not find answers in either the grass or itzi docs.
>>
>>   1.) g.gis.animation input can be raster, vector, or st?ds files. The
>> output of the model is a set of 25 raster maps. Is there a strds for this
>> output or do I list all 25 maps on the command line?
>
> At the end of the simulation, Itzï registers the created maps into strds.
> So yes, you should have a strds created.
>
>>   And, can I overlay this animation on vector maps that provide context? If
>> so, where do I read how to do this?
>
> You can add several layers to g.gui.animation, including vector maps.
>
>>
>>   2.) The individual water depth output maps are transparent; that is, I can
>> overlay them on a vector DEM contour map and see the contours underneath the
>> raster file. The maximum water output file (open_h_max) is opaque; it covers
>> the underlying vector contour map. Can it be made transparent?
>
> In the individual water depth maps, only water levels above hmin are reported.
> If you want the same effect for the maximum level map, you can use the
> if() of r.mapcalc to set a threshold.
>
>>   3.) Precipitation input is in mm/hr but the output water depth map is in
>> meters (see water_h_max.png attached). However, it is not possible for there
>> to be cells with 3m of water based on the input data. How can I obtain
>> output surface water depths in mm or cm?
>
> The water level of 3m seems to be due to accumulation on the edge of the domain.
> The water flows according to topography. If there is a lower point
> without an exit, there will be an accumulation of water.
> If you want a map in cm or mm, you can convert it using r.mapcalc.
>
> Regards,
> Laurent
>
>>
>> TIA,
>>
>> Rich
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