Re: [GRASS-dev] opencell opening temp null file: no temp files available
It seems that the files are not closed, but I use
if((elev_fd = G_open_cell_old (name, mapset)) < 0)
G_fatal_error( _("can't open %s"), name);
if((output_fd = G_open_cell_new(outname)) < 0)
G_fatal_error( _("can't open outname %s"), outname);
to open the files and
G_close_cell(output_fd);
G_close_cell(elev_fd);
to close the files again.
Is there anything wrong?
Andi
Glynn Clements wrote:
> [EMAIL PROTECTED] wrote:
>
>> I am writing a Grass programm which creates a raster, reads the values
>> of the raster map at certain points and creates a new rastermap having
>> the same name as the old one.
>>
>> I am using the function
>>
>> G_open_cell_new() to overwrite the existing raster map.
>>
>> and the function
>>
>> G_close_cell()
>>
>>
>> It works fine.
>>
>> But after about 1000 loops I get the following messsage.
>>
>> WARNING: opencell opening temp null file: no temp files available
>>
>> Does anyone know what it means. I have enough space left in my ./tmp
>> folder. And I also have write permissions on it.
>
> It probably means that files aren't getting closed, so you are
> exceeding the limit on the number of open files per process (by
> default 1024, check with ulimit -n).
>
> On Linux, you can check which files a process has open by looking in
> the /proc//fd directory, where is the PID of the process.
>
> If you're modifying a map "in-place", you'll need to close and re-open
> the input map in order to see the changes. Opening a map for write
> creates a temporary file, which is renamed over the original when
> closed. If the original cell/fcell file is still open for read at that
> point, it will still exist and still be open (it will show up as
> "(deleted)" in /proc//fd).
>
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[GRASS-dev] (no subject)
It seems that the files are not closed, but I use
if((elev_fd = G_open_cell_old (name, mapset)) < 0)
G_fatal_error( _("can't open %s"), name);
if((output_fd = G_open_cell_new(outname)) < 0)
G_fatal_error( _("can't open outname %s"), outname);
to open the files and
G_close_cell(output_fd);
G_close_cell(elev_fd);
to close the files again.
Is there anything wrong?
Andi
Glynn Clements wrote:
> [EMAIL PROTECTED] wrote:
>
>> I am writing a Grass programm which creates a raster, reads the values
>> of the raster map at certain points and creates a new rastermap having
>> the same name as the old one.
>>
>> I am using the function
>>
>> G_open_cell_new() to overwrite the existing raster map.
>>
>> and the function
>>
>> G_close_cell()
>>
>>
>> It works fine.
>>
>> But after about 1000 loops I get the following messsage.
>>
>> WARNING: opencell opening temp null file: no temp files available
>>
>> Does anyone know what it means. I have enough space left in my ./tmp
>> folder. And I also have write permissions on it.
>
> It probably means that files aren't getting closed, so you are
> exceeding the limit on the number of open files per process (by
> default 1024, check with ulimit -n).
>
> On Linux, you can check which files a process has open by looking in
> the /proc//fd directory, where is the PID of the process.
>
> If you're modifying a map "in-place", you'll need to close and re-open
> the input map in order to see the changes. Opening a map for write
> creates a temporary file, which is renamed over the original when
> closed. If the original cell/fcell file is still open for read at that
> point, it will still exist and still be open (it will show up as
> "(deleted)" in /proc//fd).
>
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[GRASS-dev] opencell opening temp null file: no temp files available
Hello, I am writing a Grass programm which creates a raster, reads the values of the raster map at certain points and creates a new rastermap having the same name as the old one. I am using the function G_open_cell_new() to overwrite the existing raster map. and the function G_close_cell() It works fine. But after about 1000 loops I get the following messsage. WARNING: opencell opening temp null file: no temp files available Does anyone know what it means. I have enough space left in my ./tmp folder. And I also have write permissions on it. Thanks in advance. Andi -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
[GRASS-dev] z value from raster to vect
Hi,
i have question concerning c Programming and vektor Files.
I extracted some points out of a dem and created a vector file.
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct ();
if (0 > Vect_copy_xyz_to_pnts (Points, xarray, yarray, NULL, n_points))
G_fatal_error ("Vect_copy error\n");
Vect_write_line (Map, type, Points, Cats);
as a result I get several vector points, but they are not connected to a
database and so they don´t ave any Information about the z value.
I would like to write the z value into a table, so that I can interpolate
between the vector points.
I´m a newbie in grass Programming. Does anyone know how to do it???
Thank you
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[GRASS-dev] make file grass 6.3 r.refine
Hi. At the moment I´m trying to compile the tool r.refine, which was written for grass 5.x on grass 6.3. I had to do some changes in the Source Code but I still have Problems with the Makefile. There is something wrong with the glut.hlibrares I think. When i try to compile it i get the following messages ... ... ... /root/Desktop/r.refine/render_tin.c:102: undefined reference to `glutCreateMenu' /root/Desktop/r.refine/render_tin.c:103: undefined reference to `glutAddMenuEntry' /root/Desktop/r.refine/render_tin.c:104: undefined reference to `glutAddMenuEntry' /root/Desktop/r.refine/render_tin.c:105: undefined reference to `glutAddMenuEntry' /root/Desktop/r.refine/render_tin.c:106: undefined reference to `glutAttachMenu' OBJ.i686-pc-linux-gnu/render_tin.o: In function `mainMenu': /root/Desktop/r.refine/render_tin.c:396: undefined reference to `glutPostRedisplay' /root/Desktop/r.refine/render_tin.c:396: undefined reference to `glutPostRedisplay' /root/Desktop/r.refine/render_tin.c:396: undefined reference to `glutPostRedisplay' OBJ.i686-pc-linux-gnu/render_tin.o: In function `display': /root/Desktop/r.refine/render_tin.c:296: undefined reference to `glFlush' OBJ.i686-pc-linux-gnu/render_tin.o: In function `OGL_render': /root/Desktop/r.refine/render_tin.c:121: undefined reference to `glutMainLoop' OBJ.i686-pc-linux-gnu/render_tin.o: In function `keypress': /root/Desktop/r.refine/render_tin.c:370: undefined reference to `glutPostRedisplay' /root/Desktop/r.refine/render_tin.c:366: undefined reference to `glutPostRedisplay' /root/Desktop/r.refine/render_tin.c:324: undefined reference to `glutPostRedisplay' /root/Desktop/r.refine/render_tin.c:332: undefined reference to `glutPostRedisplay' /root/Desktop/r.refine/render_tin.c:362: undefined reference to `glutPostRedisplay' Has anybody an idea what to do? Thank you -- Ist Ihr Browser Vista-kompatibel? Jetzt die neuesten Browser-Versionen downloaden: http://www.gmx.net/de/go/browser ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
