I'm trying to use gdalwarp to reproject an ascii grid file. According to http://www.gdal.org/formats_list.html this shouldn't be a problem and indeed I can happily use gdal_translate to create grd files (AAIGrid) but not gdalwarp:
gdaltest 14:40:08 $ gdal_translate -of AAIGrid rj_DEM_1978.grd junk.grd
Input file size is 401, 301
0...10...20...30...40...50...60...70...80...90...100 - done.
gdaltest 14:40:25 $ rm junk.*
gdaltest 14:40:41 $ gdalwarp -of AAIGrid rj_DEM_1978.grd junk.grd
Output driver `AAIGrid' not recognised or does not support
direct output file creation. The following format drivers are configured
and support direct output:
VRT: Virtual Raster
GTiff: GeoTIFF
NITF: National Imagery Transmission Format
HFA: Erdas Imagine Images (.img)
ELAS: ELAS
MEM: In Memory Raster
FITS: Flexible Image Transport System
BMP: MS Windows Device Independent Bitmap
PCIDSK: PCIDSK Database File
ILWIS: ILWIS Raster Map
SGI: SGI Image File Format 1.0
Leveller: Leveller heightfield
Terragen: Terragen heightfield
netCDF: Network Common Data Format
HDF4Image: HDF4 Dataset
ISIS2: USGS Astrogeology ISIS cube (Version 2)
ERS: ERMapper .ers Labelled
RMF: Raster Matrix Format
RST: Idrisi Raster A.1
INGR: Intergraph Raster
GSBG: Golden Software Binary Grid (.grd)
GS7BG: Golden Software 7 Binary Grid (.grd)
PNM: Portable Pixmap Format (netpbm)
ENVI: ENVI .hdr Labelled
EHdr: ESRI .hdr Labelled
PAux: PCI .aux Labelled
MFF: Vexcel MFF Raster
MFF2: Vexcel MFF2 (HKV) Raster
BT: VTP .bt (Binary Terrain) 1.3 Format
LAN: Erdas .LAN/.GIS
IDA: Image Data and Analysis
GTX: NOAA Vertical Datum .GTX
NTv2: NTv2 Datum Grid Shift
CTable2: CTable2 Datum Grid Shift
ADRG: ARC Digitized Raster Graphics
SAGA: SAGA GIS Binary Grid (.sdat)
gdaltest 14:40:52 $ which gdal_translate
/Library/Frameworks/GDAL.framework/Programs/gdal_translate
gdaltest 14:41:05 $ which gdalwarp
/Library/Frameworks/GDAL.framework/Programs/gdalwarp
gdaltest 14:41:10 $
As you can see, the format list is somewhat shorter than normal. From the two which commands at the bottom you can also see that both gdalwarpand gdal_translateare located in the same library.
Does anyone have an explanation for this? I can work around it easily enough but this shouldn't be happening, should it?
Best Answer
gdalwarp has to use Create() not CreateCopy(), and AAIGrid driver doesn't have Create(). Simple solution: