Re: [GRASS-user] Scatter plot cannot be added

Micha Silver Sat, 26 Dec 2020 23:22:40 -0800

Here's my attempt:

I downloaded the rgb.tif that you linked to, then used it to create a new, fresh location

# Create a NEW location "mega" using the georeferenced rgb.tif file to define location
# and import the file

# Run at the command line, *before* starting grass:

grass78 -c rgb.tif /home/micha/grass/mega

# Now at the grass prompt:

# Check projection settings
g.proj -p
-PROJ_INFO-------------------------------------------------
name       : WGS 84
datum      : wgs84
ellps      : wgs84
proj       : ll
no_defs    : defined
-PROJ_EPSG-------------------------------------------------
epsg       : 4326
-PROJ_UNITS------------------------------------------------
unit       : degree
units      : degrees
meters     : 1.0

# Install the scatterplot extension
g.extension r.scatterplot
Downloading precompiled GRASS Addons <r.scatterplot>...
Updating extensions metadata file...
Updating extension modules metadata file...
Installation of <r.scatterplot> successfully finished

# Now run r.scatterplot on two bands
r.scatterplot input=rgb.3,rgb.2 output=scatter_3_2
100%
Building topology for vector map <scatter_3_2@PERMANENT>...
Registering primitives...
11830000
# Almost 12 million points (!)

The X-Y coordinates of the points are the scatterplot values.

HTH,

Micha

On 12/26/2020 11:40 PM, mega saputra wrote:

The result is the same. It cannot add scatterplot.

Here is the output :

(Sun Dec 27 05:20:25 2020)
g.region -ap raster=rgb.1
projection: 3 (Latitude-Longitude)
zone: 0
datum: wgs84
ellipsoid: wgs84
north: 13:07:42.9N
south: 27:38:15.5S
west: 100:55:15.7E
east: 131:15:38.1E
nsres: 0:00:36.8
ewres: 0:00:36.8
rows: 3988
cols: 2968
cells: 11836384
(Sun Dec 27 05:20:25 2020) Command finished (0 sec)
G__open(read): Unable to open '/home/mega/newLocation/PERMAN
ENT/.tmp/mega/vector/trAreas54950/frmt': No such file or
directory

If you want to try my data, my data is in : https://1drv.ms/u/s!AjXAWS5maHffhyH0q9oTos1umy3D?e=bKa7mX

Thank you.

regards,

mega

On Sat, Dec 26, 2020 at 9:39 PM Micha Silver <tsvi...@gmail.com> wrote:

On 12/25/20 11:46 PM, mega saputra wrote:
> Sorry, there is holiday.
>
> I import the raster. Then set the region. This is my syntax :
>
> g.region -up raster=rgb.1

The "-u" flag does not set the current computational region to your
raster. It just reports what would happen if you do reset the region.

Please try:

g.region -ap rast=rgb.1

and report back the output.

> projection: 3 (Latitude-Longitude)
> zone: 0
> datum: wgs84
> ellipsoid: wgs84
> north: 13:07:42.9N
> south: 27:38:15.5S
> west: 100:55:15.7E
> east: 131:15:38.1E
> nsres: 0:00:36.8
> ewres: 0:00:36.8
> rows: 3988
> cols: 2968
> cells: 11836384
> (Sat Dec 26 05:24:05 2020) Command finished (0 sec)
>
> Then, from menu Imagery > Classify image > Interactive input for
> supervised classification. Then the output is like this :
>
> G__open(read): Unable to open '/home/mega/newLocation/PERMAN
> ENT/.tmp/mega/vector/trAreas114130/frmt': No such file or
> directory
>
> I don't know why there is that message.
> Then in Plots Menu, I choose Scatter Plots. I click Add scatter plot.
> In the Name of imagery group, I choose the raster. In the Name of
> imagery subgroup, I type the name. I click Create/edit group. In x and
> y axis, I choose a band. I click Add. Then there is a message that :
> "Scatter plot cannot be added.
> Multiple of bands ranges <x53.1@PERMANENT:65529 *
> x53.1@PERMANENT:65529 = 4294049841 > is higher than maximum limit
> <16810000> "
>
> In this case, I have defined the region. Thank you for your attention.
>
> Regards,
> mega
>
> On Wed, Dec 23, 2020 at 4:30 PM Micha Silver <tsvi...@gmail.com
> <mailto:tsvi...@gmail.com>> wrote:
>
>
> On 12/23/20 5:09 AM, mega saputra wrote:
> > Hello guys,
> >
> > I have MODIS data. It is sixteen bit unsigned integer. When I
> want to
> > add scatter plot, there is a warning :
> >
> > "Scatter plot cannot be added.
> > Multiple of bands ranges <x53.1@PERMANENT:65529 *
> > x53.1@PERMANENT:65529 = 4294049841 > is higher than maximum limit
> > <16810000> "
>
>
> Please post your computation region (i.e. the output of g.region
> -p) and
> the command you used.
>
>
> >
> > So, how to make big maximum limit on Grass GIS, so that I can add
> > scatter plot of MODIS data?
> >
> > Regards,
> > mega
> >
> > _______________________________________________
> > grass-user mailing list
> > grass-user@lists.osgeo.org <mailto:grass-user@lists.osgeo.org>
> > https://lists.osgeo.org/mailman/listinfo/grass-user
> <https://lists.osgeo.org/mailman/listinfo/grass-user>
>
> --
> Micha Silver
> Ben Gurion Univ.
> Sde Boker, Remote Sensing Lab
> cell: +972-523-665918
>
--
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918

-- 
Micha Silver
Remote Sensing Lab, Sde Boker
Ben Gurion University
cell: +972-523-665918

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