Re: [GRASS-user] GRASS g.gui.animation: change resolution and add text

[Anna Petrášová]

On Wed, Nov 4, 2015 at 3:51 AM, Dalmo1991 
wrote:

> I'm using the comand "g.gui.animation" in GRASS 7.0 to plot some raster
> maps
> (with no time information) that represent the timing evolution of a
> physical
> experiment.
>
> In detail, I'm using the instruction "g.gui.animation
> raster=map1,map2,map3"
> and then I change the parameters using the graphic interface.I export the
> result as a GIF animated image.
>
> It works, but I have two questions about how to improve the quality:
>
> 1) Can I set the resolution (number of pixels) of the output?
>
> 2) I'd like to add some text (that change during the animation according
> with the frames) somewhere in the image, like the number of the frame. Can
> I
> do it with GRASS or I have to use other software (some advice?) in
> postprocessing? I need to read the text information from a .txt because I
> have a lot of frames, so it's almost impossible to do it manually.
> Thanks for your help.
>
>
>
>
See
http://stackoverflow.com/questions/33501794/grass-g-gui-animation-change-resolution-and-add-text


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Re: [GRASS-user] Labels in GRASS 7 - Do I do wrong or is this a bug?

[Markus Neteler]

On Tue, Nov 3, 2015 at 8:33 PM, Philipp von Vangerow
 wrote:
> Hi people,
>
> Helmut's advice to rebuild the fonts with the
> g.mkfontcap -o
> solved my problem.
>
> Thank you very much, Helmut!!!

Excellent.
BTW: The upcoming 7.0.2 version contains a fix to generate the font
list at install time.

Markus
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Re: [GRASS-user] v.extrude - keeping attribute table?

[Jon Sundquist]

I would add I am running Grass 6.4.4

I just noticed the v.extrude manual for Grass 7.0 adds this additional
information:

"v.extrude modifies only features geometry. Feature categories
remain untouched and attribute data is copied from input vector map
to the output."

Perhaps this functionality was added with 7.0?  Or is it the case that
just the manual was updated?

Regardless, I will try updating to 7.

JS


On Tue, Nov 3, 2015, at 10:08 PM, Jon Sundquist wrote:
> I have data on environmental parameters at varying depth intervals.
> For each polygon of area, I duped the polygon data layer into multiple
> data layers, with each data layer having a single depth-specific
> record (I would ideally like to do it as the poster was asking about
> in this thread -
> http://osgeo-org.1560.x6.nabble.com/automate-v-extrude-from-a-table-td4978722.html#a4978730
> but there seemed to be no easy way to do this other than some complex
> python scripting, so I separated/duped each polygon by hand and then
> all the records except for the one corresponding to that depth
> interval, before it got extruded).
>
> I then ran v.extrude to generate the volume corresponding to each
> separate data layer.  However, the resulting 3d data layer does not
> appear to have an attribute table.
>
> Does v.extrude not "bring along" the attribute table or am I doing
> something wrong?
>
> I need the attribute table info, since I plan to merge these separate
> extruded data layers into a single data layer and then query them
> based on the a field value and then visualize the results in nviz.
> However, if the attribute table doesn't follow into the extruded
> shape, then I can't query.
>
> Ideas?
>
> JS
>
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[GRASS-user] GRASS g.gui.animation: change resolution and add text

[Dalmo1991]

I'm using the comand "g.gui.animation" in GRASS 7.0 to plot some raster maps
(with no time information) that represent the timing evolution of a physical
experiment.

In detail, I'm using the instruction "g.gui.animation raster=map1,map2,map3"
and then I change the parameters using the graphic interface.I export the
result as a GIF animated image.

It works, but I have two questions about how to improve the quality:

1) Can I set the resolution (number of pixels) of the output?

2) I'd like to add some text (that change during the animation according
with the frames) somewhere in the image, like the number of the frame. Can I
do it with GRASS or I have to use other software (some advice?) in
postprocessing? I need to read the text information from a .txt because I
have a lot of frames, so it's almost impossible to do it manually.
Thanks for your help.



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[GRASS-user] what are acceptable smoothing values in v.surf.rst

[Michael Barton]

We’re having trouble figuring out what range of values can be used as a 
smoothing parameter, especially when input from a map of smoothing values. What 
is the acceptable or functional range? How does smoothing affect a value in a 
cell?

The case that brought this up is one of my students doing a temporal surface 
interpolated from radiocarbon dates across the western Mediterranean. He’d like 
to use a value related to the SD of the dates (maybe the CV) to smooth this 
temporal surface so that smaller SD’s have the surface more closely matching 
each known date and higher SDs let that surface respond more to the neighboring 
dates.

Michael


C. Michael Barton
Director, Center for Social Dynamics & Complexity
Professor of Anthropology, School of Human Evolution & Social Change
Head, Graduate Faculty in Complex Adaptive Systems Science
Arizona State University

voice:  480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)
fax: 480-965-7671 (SHESC),  480-727-0709 (CSDC)
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu



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