Re: [gdal-dev] Unable to create OGRSpatialReference

2012-10-21 Thread jcurru
Frank, I've been working a little bit with your ideas. The target is to realize towgs84 parameters automatically. Of course it doesn't work many times because all the procedures I use fail and/or because my code is wrong. I don't know, but maybe you can find it useful. I use Embarcadero (former

Re: [gdal-dev] Unable to create OGRSpatialReference

2012-10-20 Thread jcurru
Frank, Thanks you for your expert answer. It opens for me two or three new ways to look for the /lost/ parameter. My interest is not only in SHP, but your ideas might solve part of my problem. As for what you say I'm up with fixing this with your support (ie. testing, prompting) I am at your

Re: [gdal-dev] Unable to create OGRSpatialReference

2012-10-19 Thread Even Rouault
Le vendredi 19 octobre 2012 16:41:14, jcurru a écrit : Hello! I have an old problem with TOWGS84 and OGRSpatialReference. Most likely it's because I'm no expert in GDAL. It is important for my project, and limits many of its capabilities. The fact is that, for unknown reasons (to me), proj4

Re: [gdal-dev] Unable to create OGRSpatialReference

2012-10-19 Thread jcurru
Thank you again, Even. Well, I've taken a look at the documentation you mention, but no answers there, just an explanation about wgsto84 parameters and a proposal for extending the geotiff standard in order to embed the famous parameter. I guess that if you don't say oh man, didn' you know this

Re: [gdal-dev] Unable to create OGRSpatialReference

2012-10-19 Thread Frank Warmerdam
On Fri, Oct 19, 2012 at 7:41 AM, jcurru jcu...@yahoo.es wrote: Hello! I have an old problem with TOWGS84 and OGRSpatialReference. Most likely it's because I'm no expert in GDAL. It is important for my project, and limits many of its capabilities. The fact is that, for unknown reasons (to

Re: [gdal-dev] Unable to create OGRSpatialReference

2012-10-19 Thread jcurru
Frank, First of all let me tell you thanks for your work. Thanks is not enough but my poor english would put me in troubles if I tried to say something more complicated. And thank you very much for your answer. Getting help from you from the other side of the ocean (I live in Madrid, Spain) is a

Re: [gdal-dev] Unable to create OGRSpatialReference

2012-10-19 Thread Frank Warmerdam
On Fri, Oct 19, 2012 at 2:00 PM, jcurru jcu...@yahoo.es wrote: I often use other programs to display geospatial information, for example Global Mapper. It realizes coordinate systems from (for example) shapefiles without EPSG, and applies transformations correctly. What am I missing? Jose,