A, DEM extraction slope, how to solve the DEM data overload
[Problem Description]:
DEM extraction slope, how to solve the DEM data is too large, there are about 60G data
[Solution]:
You can use split raster, DEM will be split, then you can use the model builder, adding iterative function realization slope analysis, and finally the use of mosaic to new raster tool to merge.
Second, add to the raster data Mosaic given set of tools
[Problem Description]:
Adding raster data to a mosaic set of tools error
[Solution]:
questions cracked version of the software, the manual parallel computing factor to 0 on it.
Third, how to generate a 3D point cloud data UAV
[Problems] Description:
UAV generated 3D point cloud data
[Solution]:
1) Drone2Map, Drone2Map no special requirements of specific images and processing flow, generally at least 60% and 40% overlap of course next to the overlap, 3D models of high quality if necessary, overlap rate, and heading to the next overlap ratio is preferably 80% or more. There is no requirement camera pose no need to import.
See: http://blog.csdn.net/sydbc/article/details/50837285
2) ArcMAP10.5 of orthomapping, imported by constructing a mosaic dataset UAV data, after the construction of the camera model and generate a point cloud, the specific process, see:
Ortho-Mapping with Mosaic Datasets Help | ArcGIS Desktop
HTTP: //desktop.arcgis .com / en / arcmap / latest / manage-data / raster-and-images / ortho-mapping-overview.htm
Fourth, why the display is cut out of the original grid of different grids
[Problem Description]:
Why cut out the grid display with the original grid different?
[Solution]:
Due to different statistic cutting results with the original data, resulting in rendering time difference.
If you want to maintain the effect after cutting the same as the original grid, you can export your original raster statistics to an XML file (exported in the General tab in the statistics section of the property grid), and then use the Set Raster Properties tool XML cutting into the grid can be.
5, how to quickly re-classified according to the raster list
[Problem Description]:
How fast raster reclassified in accordance with the list
[Solution]:
look up tool or reclass by table tool.
Sixth, how to generate raster data attribute table
[Problem Description]:
how to generate raster data attribute table?
[Solution]:
Use IRasterDatasetEdit2.BuildAttributeTable method, the sample code AO Links: http://resources.arcgis.com/en/help/arcobjects-net/conceptualhelp/index.html#/d/000100000463000000.htm
Seven field raster attribute table to add their own how to generate a corresponding new grid
[Problem Description]:
How raster attribute table to add your own fields to generate a corresponding new grid
[Solution]:
with a look-up table (look up) tool, reclassified as a new grid.
Eight single multiband image to remove black borders
[Problems] Description:
image has three bands, the black side of 0,0,0
[Solution]:
The three bands were added to the ArcMap, right copy raster, BATCH use, the three separate bands add to the mix, and the nodata value to 0, after use composite band to be combined.
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