GDAL
Dinamica version: 1.9.0
Below, the influence of the library GDAL in the Dinamica EGO operation is presented.
File Formats
Input Formats
Using GDAL, Dinamica EGO can read maps in the following file formats.
Description | Extension |
---|---|
VRT | .vrt |
GTiff | .tif |
NITF | .ntf |
RPFTOC | .toc |
HFA | .img |
SAR_CEOS | |
CEOS | |
JAXAPALSAR | |
GFF | .gff |
ELAS | |
AIG | |
AAIGrid | .asc |
SDTS | .ddf |
DTED | |
PNG | .png |
JPEG | .jpg |
MEM | |
JDEM | .mem |
GIF | .gif |
BIGGIF | .gif |
ESAT | .n1 |
BSB | |
XPM | .xpm |
BMP | .bmp |
DIMAP | |
AirSAR | |
RS2 | |
PCIDSK | .pix |
PCRaster | .map |
ILWIS | .mpr/mpl |
SGI | .rgb |
SRTMHGT | .hgt |
Leveller | .ter |
Terragen | .ter |
ISIS3 | |
ISIS2 | |
PDS | |
TIL | |
ERS | |
JP2OpenJPEG | .jp2 |
L1B | |
FIT | |
GRIB | .grb |
RMF | .rsw |
WCS | |
WMS | |
MSGN | .nat |
RST | .rst |
INGR | |
GSAG | .grd |
GSBG | .grd |
GS7BG | .grd |
COSAR | |
TSX | |
COASP | .hdr |
R | .rda |
PNM | .pnm |
DOQ1 | |
DOQ2 | |
ENVI | |
EHdr | |
GenBin | |
PAux | |
MFF | .hdr |
MFF2 | |
FujiBAS | |
GSC | |
FAST | |
BT | .bt |
LAN | |
CPG | |
IDA | |
NDF | |
EIR | |
DIPEx | |
LCP | .lcp |
GTX | .gtx |
LOSLAS | |
NTv2 | .gsb |
RIK | .rik |
USGSDEM | .dem |
GXF | .gxf |
HTTP | |
NWT_GRD | .grd |
NWT_GRC | .grc |
ADRG | .gen |
SRP | .img |
BLX | .blx |
Rasterlite | .sqlite |
PostGISRaster | |
SAGA | .sdat |
KMLSUPEROVERLAY | |
XYZ | .xyz |
HF2 | .hf2 |
OZI |
Output Formats
Using GDAL, Dinamica EGO can write maps in the following file formats.
Description 1) | Extension |
---|---|
VRT | .vrt |
GTiff | .tif |
NITF | .ntf |
HFA | .img |
ELAS* | .elas |
MEM* | .mem |
BMP | .bmp |
PCIDSK | .pix |
ILWIS | .mpr/mpl |
SGI | .rgb |
Leveller | .ter |
Terragen | .ter |
ERS* | .ers |
RMF | .rsw |
RST | .rst |
INGR* | .ingr |
GSBG | .grd |
PNM | .pnm |
ENVI* | .envi |
EHdr* | .ehdr |
PAux* | .paux |
MFF | .hdr |
MFF2* | .mff2 |
BT | .bt |
IDA* | .ida |
GTX | .gtx |
NTv2 | .gsb |
ADRG | .gen |
SAGA | .sdat |
Some important notes:
- The support to AAIGrid (.asc) in GDAL is read only. So, Dinamica EGO provides the writing capability itself. This format can read images using cell types “Signed 32 Bit Integer” and “IEEE 754 32 Bit Real”. All cell types can be written, but they are automatically converted back to one of those formats next time Dinamica reads the image again.
- The support to ERMapper (.ers) in GDAL ignores class names. To workaround this limitation, support to reading and writing this file format is provided by Dinamica EGO itself.
GDAL Limitations
GDAL (and some times the underlying file format) imposes limitations on the representation of projections, category names, their corresponding colors and layer names. The limitations and their corresponding workaround are listed in the table below:
Limitation | Workaround |
---|---|
Some file formats do not support the storage of projections | Use a VRT file 2) or an auxiliary PAM XML file 3) to keep this information. |
Several file formats do not support the storage of category names. | To workaround this limitations, it is possible to use a VRT file or an auxiliary PAM XML file to keep this information. The ERMapper file format has the best support to category names and colors. |
Several file formats do not support the storage of category colors. | To workaround this limitations, it is possible to use a VRT file or an auxiliary PAM XML file to keep this information. The ERMapper file format has the best support to category names and colors. |
Several file formats do not support the storage of layer names. | To workaround this limitations, it is possible to use a VRT file or an auxiliary PAM XML file to keep this information. The ERMapper file format also has support to layer names. |
The categories must start from 0 and their definition must be contiguous. | Unfortunately, the only way to workaround this limitation is defining dummy categories (Dinamica does this when representing non-contiguous categories in a GDAL supported format) or using the ERMapper file format. |
Dinamica Limitation
Dinamica only retrieves and uses category names and colors from the first layer/band when using GDAL. All the other layers/bands are supposed to use the same category names and colors.
Workdir/folder Names
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Virtual Format
GDAL support a virtual file format called VRT. This format can be used to transform an image defining a different registration info, different classe names and a different color table. It can also be use to create mosaics from several different images. A example of a VRT file defined from a two unrelated image files can be found below.
- test.vrt
<VRTDataset rasterXSize="2512" rasterYSize="2512"> <GeoTransform>-440720.0, 60.0, 30.0, 3751320.0, 0.0, -60.0</GeoTransform> <VRTRasterBand dataType="Byte" band="teste"> <ColorInterp>Palette</ColorInterp> <ColorTable> <Entry c1="255" c2="0" c3="0" c4="255"/> <Entry c1="145" c2="78" c3="224" c4="255"/> <Entry c1="145" c2="230" c3="0" c4="255"/> <Entry c1="145" c2="145" c3="145" c4="255"/> <Entry c1="100" c2="200" c3="30" c4="255"/> <Entry c1="10" c2="20" c3="30" c4="255"/> </ColorTable> <SimpleSource> <SourceFilename relativeToVRT="teste">myband.bmp</SourceFilename> <SourceBand>1</SourceBand> <SrcRect xOff="0" yOff="0" xSize="512" ySize="512"/> <DstRect xOff="100" yOff="100" xSize="512" ySize="512"/> </SimpleSource> <CategoryNames> <Category>Missing</Category> <Category>Non-Crop</Category> <Category>Wheat</Category> <Category>Corn</Category> <Category>Soybeans</Category> </CategoryNames> </VRTRasterBand> </VRTDataset>
PAM XML Auxiliary File
!!!
File Filters
The document below provides some information about the file filters available in the open map file and save map file dialogs:
https://docs.google.com/document/pub?id=1pXhk1f8eXugA_2sQ3rqQSZV0KXPVhAtutTRD3LCh9g8