[gdal-dev] Calibration/georeferencing and warping of map with unknown projection

2012-05-06 Thread contact
Hello, Project ShareMap[1] uses gdal_warp on the server side to allow users to work with calibrated rasters maps as overlay on web mercator maps. In case of maps in large scale it performas relatively well (country maps - almost ok, provinces maps - perfect)[2]. The problem is if we try to ca

Re: [gdal-dev] Displaying vector files

2012-05-06 Thread Etienne Tourigny
You can also create a custom application based on QGis, if you do not want the entire QGis interface or if you want to customize the UI (or integrate it with your existing application). Etienne On Sun, May 6, 2012 at 5:17 AM, Jean-Claude Repetto wrote: > On 05/06/12 09:40, akshay gupta wrote: >>

Re: [gdal-dev] Get SRID from image file

2012-05-06 Thread Ivan Lucena
Hi Billy, > Unfortunately I was not being very clear. The process in which I am indexing > the image files (storing their metadata in the database) is a java process. It is a complex application in which we keep track of the changes in a directory structure such that we can index new files dr

Re: [gdal-dev] gdal.AutoCreateWarpedVRT returning different results than osr.CoordinateTransformation

2012-05-06 Thread Etienne Tourigny
Billy, You might consider creating a warped image with a larger pixel size (a multiple of your real target size, say 3000m) to calculate the "correct" extents and then throwing it away. Etienne On Sat, May 5, 2012 at 6:22 PM, Billy Newman wrote: > Still very confused. > > I have a tiff file.  I

Re: [gdal-dev] Displaying vector files

2012-05-06 Thread Jean-Claude Repetto
On 05/06/12 09:40, akshay gupta wrote: Hi all, I am writing an application to load vector maps/shape files using gdal/ogr and display them onto a gui designed using Qt. I am new to dealing with vector files, I am not able to decide how to render them on GUI. Few approaches that come to my mind

[gdal-dev] Displaying vector files

2012-05-06 Thread akshay gupta
Hi all, I am writing an application to load vector maps/shape files using gdal/ogr and display them onto a gui designed using Qt. I am new to dealing with vector files, I am not able to decide how to render them on GUI. Few approaches that come to my mind are: - To convert vector files to raster