Re: [GRASS-user] Are RADAR GIFs raster?
José, It would be helpful if you could provide a link to the data you are downloading for me and others to give you an informed response. You could simply be looking at color values, or they could be radar reflectivity values (dBZ), or precipitation amounts, or wind velocities — not to mention what the units of the data. This would come from the metadata of the data you are using. More information is needed. Tom On Sun, Jun 14, 2015 at 2:56 AM, José Anderson joseandersonbati...@gmail.com wrote: Hello everyone, I georefered several RADAR GIF from a desired storm in my research and realized there are some numbers set as an attribute in the pixels, beside the pixel RGB color. I found GIF generally is an option to export original CAPPI and PPI RADAR images. Such original RADAR images contains Unsigned Character Values set to the pixels. So I'm wondering what that GIF pixel attribute values could mean. I'd appriciate any kind of answer Jose ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user -- ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] [GRASS-dev] BIG QGIS problem
Have you try ogr2ogr every Shapefile http://www.spatiallyadjusted.com/2012/12/07/ogr2ogr-every-shapefile/ ? This allows me to restore some shapefiles with problems -- View this message in context: http://osgeo-org.1560.x6.nabble.com/BIG-QGIS-problem-tp5210808p5210823.html Sent from the Grass - Users mailing list archive at Nabble.com. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Are RADAR GIFs raster?
Hello everyone, I georefered several RADAR GIF from a desired storm in my research and realized there are some numbers set as an attribute in the pixels, beside the pixel RGB color. I found GIF generally is an option to export original CAPPI and PPI RADAR images. Such original RADAR images contains Unsigned Character Values set to the pixels. So I'm wondering what that GIF pixel attribute values could mean. I'd appriciate any kind of answer Jose ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Are RADAR GIFs raster?
Thomas, here is an example. http://radar.weather.gov/ridge/Conus/index_loop.php Choose a Mosaic Sector. Next, pick a State and a RADAR location (left side menu). Unmark other layers than the RADAR images. Then you can download the image by right-clicking on it. Thank you very much Jose Em dom, 14 de jun de 2015 06:33, Thomas Adams tea...@gmail.com escreveu: José, It would be helpful if you could provide a link to the data you are downloading for me and others to give you an informed response. You could simply be looking at color values, or they could be radar reflectivity values (dBZ), or precipitation amounts, or wind velocities — not to mention what the units of the data. This would come from the metadata of the data you are using. More information is needed. Tom On Sun, Jun 14, 2015 at 2:56 AM, José Anderson joseandersonbati...@gmail.com wrote: Hello everyone, I georefered several RADAR GIF from a desired storm in my research and realized there are some numbers set as an attribute in the pixels, beside the pixel RGB color. I found GIF generally is an option to export original CAPPI and PPI RADAR images. Such original RADAR images contains Unsigned Character Values set to the pixels. So I'm wondering what that GIF pixel attribute values could mean. I'd appriciate any kind of answer Jose ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user -- ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Are RADAR GIFs raster?
José https://plus.google.com/u/0/109748848159632478544?prsrc=4, I'm very familiar with these data and how they are produced. I think by doing what you are doing, you are only getting color values of the data; so, unless you're interested -only- in pretty pictures of radar *reflectivity*, this is useless. You should go here: http://water.weather.gov/precip/ to get precipitation data and click on the 'Download' tab which will get you here: http://water.weather.gov/precip/download.php The data downloads as shapefiles, so you'll have to do some spatial interpolation. This data has been quality control much better than what you could get through the link you were using. Tom On Sun, Jun 14, 2015 at 1:22 PM, José Anderson joseandersonbati...@gmail.com wrote: Thomas, here is an example. http://radar.weather.gov/ridge/Conus/index_loop.php Choose a Mosaic Sector. Next, pick a State and a RADAR location (left side menu). Unmark other layers than the RADAR images. Then you can download the image by right-clicking on it. Thank you very much Jose Em dom, 14 de jun de 2015 06:33, Thomas Adams tea...@gmail.com escreveu: José, It would be helpful if you could provide a link to the data you are downloading for me and others to give you an informed response. You could simply be looking at color values, or they could be radar reflectivity values (dBZ), or precipitation amounts, or wind velocities — not to mention what the units of the data. This would come from the metadata of the data you are using. More information is needed. Tom On Sun, Jun 14, 2015 at 2:56 AM, José Anderson joseandersonbati...@gmail.com wrote: Hello everyone, I georefered several RADAR GIF from a desired storm in my research and realized there are some numbers set as an attribute in the pixels, beside the pixel RGB color. I found GIF generally is an option to export original CAPPI and PPI RADAR images. Such original RADAR images contains Unsigned Character Values set to the pixels. So I'm wondering what that GIF pixel attribute values could mean. I'd appriciate any kind of answer Jose ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user -- -- ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
