Issues installing GDAL with PostgreSQL
I’m trying to install gdal-1.11.0 on CentOS 6 machine. Following the instructions, this is my config ./configure --prefix /usr/local --with-fgdb=/usr/local/FileGDB_API...
View ArticleGDAL C++ API: How to create PNG or JPEG from scratch
I’m new to GIS and GDAL. My question probably is very basic, but I couldn’t find answer. May be I don’t understand GDAL ideology. I need to create raster images from scratch, for example, JPEG or PNG....
View ArticleReprojection error
I have a lidar file (file.las) with the following spatial reference: Spatial Reference: PROJCS["NAD83 / UTM zone 11N", GEOGCS["NAD83", DATUM["North_American_Datum_1983", SPHEROID["GRS...
View ArticleUsing gdal-java of OSGeo4W
I would like to use gdal_polygonize and gdalinfo in java. This site says: “Note that OSGeo4W includes a gdal-java package and a Java runtime making it fairly easily to build local Java applications...
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How to create a mosaic in QGIS with cutline and feathering for Landsat-8 imagery
1 – I have two scenes Landsat-8 RGB 6/5/4 and I need to mosaic them: 2- This is my cutline in polygon format that will smooth the overlapping area: 3 – So, I need to create a mosaic with feathering...
View ArticleGeoreferencing using Liblas error
I am trying to write georeferencing information to a ‘.las’ file using liblas and c++. Here is my code: ofstream ofs; ofs.open("test.las", ios::out | ios::binary); liblas::Header header; liblas::Writer...
View Articledownsample raster map with average algorithm
I need to downsample map to new map with less resolution NOT for overview BUT to new map file with smaller size I need to do that with gdal Utils thanks!
View ArticleDownsample raster average map with control on the average algorithm
I need to downsample raster average map with control on the average algorithm to 1/4 from original size
View ArticleHow to crop Geotiff image in C++ (GDAL or other possibilities)?
I am developing a code to process a geotiff image. But firsly I need to crop a geotiff image preserving its metadata (projection…) in C++. My idea it’s to provide the corners and the geotiff image to a...
View ArticleLoad the raster image which is in TIF format using QGIS API
I am quite new inthe field of GIS. I am interested in is to load the raster image which is in TIF format using QGIS API I have followed the steps given the in the follwing link to load shape file enter...
View Articlespecifying extent in GDAL's WriteArray
Is it possible to specify the extent when creating an empty raster in GDAL? I looked everywhere, but can’t seem to find anything. The portion of my script where I write the raster would look something...
View ArticleUsing GDAL to get vertices of a multipolygon
I am successfully using GDAL to get the vertices of a polygon from a ShapeFile using .NET code. This link showed me how to do that:...
View ArticleGeoreferencing uneven/irregularly gridded rasters
I’m trying to take a set of NetCDFs and turn them into georeferenced datasets using GDAL. However, the only Geospatial data is a set of 2-D lat/lon arrays. The projection type is not lat/lon. THe...
View Articlespecifying extent in GDAL's WriteArray
Is it possible to specify the extent when creating an empty raster in GDAL? I looked everywhere, but can’t seem to find anything. The portion of my script where I write the raster would look something...
View ArticleCan I export overview with gdal?
How can I export overview for example 1/4 from the orginal raster map to a geotiff file using gdal?
View ArticleConverting in batch into 8 unsigned bit format using GDAL?
Could you please correct my batch command? I had 100 img images which need to be converted into 8 unsigned bit format for further use in TIMESAT. mkdir test for %%f in (*.img) do gdal_translate -of...
View Articlegdal ReadAsArray returning NoneType
I’m trying to read in several rasters as array using gdal in a python script, but I keep getting NoneType returned and can’t figure out why. The process is this: 1. Use gdalbuildvrt...
View ArticleHow to convert SPOT NDVI hdf file to tiff file using gdal_translate command
I have SPOT NDVI images. I want to convert NDVI hdf to tiff. I have used the following code to get the information of hdf file: gdalinfo 20060501_NDVI.HDF I get the following output Driver:...
View Articleogr2ogr unable to open KML datasource
I downloaded some Wikimapia data using the wikimapia.api. Everything is A-OK since I’ve opened this in Google Earth and everything is in place. However, I need to turn it into a shapefile, or get the...
View ArticleQGIS Polygonize (GDAL) problem – Null value in attribute
Is it possible to use Polygonize in QGIS (GDAL) so that a line shapefile is converted to a polygon shapefile with an attribute(s) in the line file carried into the polygon file. I am trying to build an...
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