Re: [gdal-dev] Negative NoData Value with Signed Byte Raster

2016-04-07 Thread Jerl Simpson
Just out of curiosity, have you tried using QGIS? It might solve the issue for you...or might just be a goose chase. Jerl Simpson V.P. Systems Engineering Weather Trends Internationalhttp://www.weathertrends360.com/ This communication is privileged and may contain confidential information. It&#

Re: [gdal-dev] Parllelization slows down single gdal_calc process in python

2016-03-03 Thread Jerl Simpson
the multiprocessing library. You can setup a pool of workers that all read from the same input queue. Then you can just feed your data into the queue so the workers can process the maps. Jerl Simpson Sr. Systems Engineer Weather Trends Internationalhttp://www.weathertrends360.com/ This

[gdal-dev] gdalwarp sets nodata value for real data points

2014-09-24 Thread Jerl Simpson
I've noticed a problem when using gdalwarp to warp netCDF data sets to different resolutions. $ gdalwarp --version GDAL 1.11.0, released 2014/04/16 It also happens with: $ gdalwarp --version GDAL 1.9.2, released 2012/10/08 It makes no difference if I'm warping to a higher, lower or same resolut

Re: [gdal-dev] Satellite projections

2013-10-28 Thread Jerl Simpson
you perhaps have some useful pointers to > software to use? Online documentation is rather scarce... > > Thanks Reinoud > > > > > On 10/28/2013 04:41 PM, Jerl Simpson wrote: > > Thanks Simon! > > I'll give it a shot. Meteosat is definitely a pain, and it

Re: [gdal-dev] Satellite projections

2013-10-28 Thread Jerl Simpson
up_left_y=5570244.832537 > low_rig_x=5567248.429179 > low_rig_y=-5567252.429179 > > That should cover the full disk and seems to work with all satellites - > you just need to vary the longitude to change between GOES/MSG/MTSAT etc. > Cheers, > Simon > > ----

Re: [gdal-dev] Satellite projections

2013-10-28 Thread Jerl Simpson
d?) > > Cheers, > Simon > > ------ > *Fra:* gdal-dev-boun...@lists.osgeo.org [gdal-dev-boun...@lists.osgeo.org] > på vegne af Jerl Simpson [jsimp...@wxtrends.com] > *Sendt:* 28. oktober 2013 16:17 > *Til:* gdal-dev@lists.osgeo.org > *Emne:* [gdal

[gdal-dev] Satellite projections

2013-10-28 Thread Jerl Simpson
Hi guys: I have a few data sets that come from the GOES satellites (Full Disk) and a couple others. I can use one of the SSEC's programs to convert from their format to a netCDF. No useful SRS info comes along in the conversion. I've applied an SRS to them using gdal_translate and PROJ.4 that l

[gdal-dev] gdalwarp -ts issue when output size is too large.

2012-12-11 Thread Jerl Simpson
I'm having an issue using gdalwarp to interpolate over some data to smooth it out. gdalwarp --version GDAL 1.9.1, released 2012/05/16 I have a dataset that's rather small: gdalinfo shows: Size is 360, 181 Coordinate System is `' Origin = (-0.500,90.500) Pixel Size = (1.000

Re: [gdal-dev] undefined symbol error

2012-02-23 Thread Jerl Simpson
dynamic loader adapts to the version of the shared > library it ends up manually loading. > > Best regards, > Frank > > On Thu, Feb 23, 2012 at 7:44 AM, Jerl Simpson > wrote: > > Hey guys, I just grabbed gdal 1.9 from SVN, compiled it and I am getting > an > >

[gdal-dev] undefined symbol error

2012-02-23 Thread Jerl Simpson
Hey guys, I just grabbed gdal 1.9 from SVN, compiled it and I am getting an undefined symbol error pj_ctx_alloc in many of the ./apps/ programs. I first noticed it with gdaldem. Everything is pointing to my build directory. I've tried all manner of things, not sure what to do next. gdal1.9NEW/apps/

Re: [gdal-dev] compiling GDAL with GEOS support.

2011-08-17 Thread Jerl Simpson
That was the problem. I thought specifying the GEOS install directly would overcome that. Thanks for the help. Jerl On Wed, Aug 17, 2011 at 1:00 PM, Even Rouault wrote: > Le mercredi 17 août 2011 18:19:20, Jerl Simpson a écrit : > > Hi: > > > > I'm having a strange

[gdal-dev] compiling GDAL with GEOS support.

2011-08-17 Thread Jerl Simpson
Hi: I'm having a strange issue when compiling GDAL with GEOS support. I wonder if someone can help. When I enable GEOS support using "--with-geos=/usr/local/bin/geos-config" I get the following errors: gdal/.libs/libgdal.so: undefined reference to `GEOSWKBWriter_create' gdal/.libs/libgdal.so: u

Re: [gdal-dev] Python BuildPolygonFromEdges fails near equator

2011-06-02 Thread Jerl Simpson
Your blind guess was perfect!! Thank you, that did it. Jerl On Thu, Jun 2, 2011 at 6:43 AM, Even Rouault wrote: > Jerl, > > Difficult to say without seing the data and the exact BuildPolygonFromEdges > you > invoke... > > A blind guess would be to increase the value of the tolerance parameter.

[gdal-dev] Python BuildPolygonFromEdges fails near equator

2011-06-02 Thread Jerl Simpson
Hi: I'm having a weird issue that I'm hoping someone can shed some light on for me. I have a python script that reads through a CSV file and builds a couple ESRI Shapefiles from it. I'm generating 2 geometries, POLYGON and LINESTRING. LINESTRING works great but POLYGON fails when points are "ne

Re: [gdal-dev] Labeling rasters

2011-05-19 Thread Jerl Simpson
Thanks Hernán, that's actually what I'm working on this morning. 2011/5/19 Hernán De Angelis : > Generic Mapping Tools (http://gmt.soest.hawaii.edu/) > > H. > > > 2011/5/16 Jerl Simpson : >> Ok, thank you. >> >> Does anyone else have any suggestion

Re: [gdal-dev] Labeling rasters

2011-05-16 Thread Jerl Simpson
> applications that do this. Perhaps, qgis has a plugin. > > On Tue, May 17, 2011 at 1:30 AM, Jerl Simpson wrote: >> >> I already have the resultant image, it looks great.   Just drawing >> lines on a map.  I'm using a blank image so I can more clearly see >> wh

Re: [gdal-dev] Labeling rasters

2011-05-16 Thread Jerl Simpson
'contour' for > . > > Make sure BLANK.tif doesn't have different extents/projection. > > Your final image will have a data type of Float64. You may have to run some > contrast stretching operations on it. > > On Tue, May 17, 2011 at 12:04 AM, Jerl Simpson &g

[gdal-dev] Labeling rasters

2011-05-16 Thread Jerl Simpson
Hi guys and gals: I have something that's evading me. I have a basic ESRI Shape file (created using gdal_contour) that I run through gdal_rasterize to generate very nice looking contour map. But I want the value of the contour in there. I've been trying different things with the -a option, but

Re: [gdal-dev] gdal2tiles.py issue

2011-04-22 Thread Jerl Simpson
on and also workaround for this problem > > Best regards, > > Petr alias Klokan > > On Thu, Apr 21, 2011 at 5:50 PM, Jerl Simpson wrote: >> Hi guys: >> >> I posted a similar question a week or so ago, but have slightly >> different information that might he

[gdal-dev] gdal2tiles.py issue

2011-04-21 Thread Jerl Simpson
Hi guys: I posted a similar question a week or so ago, but have slightly different information that might help me reach a solution. I'm using gdal2tiles.py to tile up an image for google maps. It works great right up to the 180th meridian. That's where it introduces a transparent strip on the e

[gdal-dev] Re: Dateline gap

2011-04-14 Thread Jerl Simpson
Does anyone on the GDAL team have any suggestions on how to do this? Thank you, Jerl On Tue, Apr 12, 2011 at 2:59 PM, Jerl Simpson wrote: > Hello: > > I stopped by the #gdal channel on IRC to ask this question.  Thank you > for the help provided there.  I thought it might be

Re: [gdal-dev] Dateline gap

2011-04-14 Thread Jerl Simpson
Joaquim: Ok that makes more sense now. You answered some of the questions I was having, like how can ps2raster do anything with a necdf anyway? I just used the info for that one test file, because the contents were shorted. It happens with others as well like this one that has these coordinates

Re: [gdal-dev] Dateline gap

2011-04-14 Thread Jerl Simpson
Hello: I'm having a hard time getting anything to work with the files I have. Maybe the files need to be changed or translated? Joaquim mentioned they need to be in geogs but I'm not sure how to go about checking for that or converting to that if need be. I've included output from one of the te

Re: [gdal-dev] Dateline gap

2011-04-12 Thread Jerl Simpson
Thanks for the GMT suggestions. I've never used it, I'll try it out. Thanks!! Typed with thumbs... On Apr 12, 2011 7:24 PM, "Joaquim Luis" wrote: > Jerl, > > I would do that with GMT. By using ps2raster you can convert any GMT > figure (in geogs of course) into KML, and GMT has excellent care of

[gdal-dev] Dateline gap

2011-04-12 Thread Jerl Simpson
Hello: I stopped by the #gdal channel on IRC to ask this question. Thank you for the help provided there. I thought it might be better if I asked a question here so I can better explain what's going on in one spot and not flood the channel. I understand this is a pixel center vs pixel edge issue