ESRI
ASCII grid
The ESRI ASCII grid format is a simple format that support one raster having one band.
| General |
ASCII file-based format for a single data set of any kind. The format is very inefficient for random access, and you are advised to convert the data set to some other format before using it. |
| Read |
The driver reads the file upon opening and stores the data in main memory. Floating point data is converted to dspFloat32, and integer data is converted to dspInt32. Other data types are not supported. |
| Write |
This format does not support writing of new or modified data sets. |
| Attributes | This format does not include any attributes. |
| Coordinate system |
The format does not contain coordinate system information other than the lower-left corner. |
| Documentation | This format is not authoritatively documented. It is however so simple that it is easily understood from examining the file with any text editor. |
| Data sources | This format was used by ESRI to distribute raster data. ESRI offers the Geography Network where you can search for and download spatial data. This format is probably only useful to read that long forgotten GRID file that you just got from your boss who wants you to make that good ol' data useful again.. |
| Developer information |
None. |