On 12/11/2014 08:21 PM, Pedro Camargo wrote: > Hi group, > During my discussions with people from the transportation > modeling world, some people pointed out a few features that would be nice > to have in order to use QGIS more intensively by our group. > > The most important issue, however, was the possibility of > open matrices in a very efficient way (reading matrices that are > 10.000x10.000 in dbf format means reading 10e8 lines, which takes a VERY > long time and defeats the purpose of using QGIS for some things. > > A very good alternative would be using an open source > format from the project "open model data" ( > https://sites.google.com/site/openmodeldata/) which is based on HDF5. > > I see that QGIS can already open raster data in HDF5 > format, but in this case, the data would be a matrix with indices and all. > > I regret to say that my programming skills, specially in > C/C++ are not nearly good enough to evaluate the effort that it would take > include such support and have, inside QGIS, a possibility of viewing such > matrices, which would allow people from the transportation world (and I am > the first volunteer) to develop the necessary plugins to manipulate the > matrices and generate the commonly used statistics. > > Can anybody tell me what type of effort it would take and if > it is at all of interest of the QGIS community? > > Thanks a lot, > > Pedro
This is more a question for GDAL/OGR I think. How do your matrix values relate to map objects? Is your matrix a vector or a raster? What do you want to do with the data inside QGIS? Thanks, Alex _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
