GISTools:Raster

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The GIS Tools Raster menu includes items for working with raster format data such as grids.

The available options include:

Assign Projection to Grids

This tool allows the user to assign a projection to a raster data object. The projection data is written to the grid, but no actual reprojection occurs. This is functionally equivalent to ESRI???s ???Define Projection??? tool.

Reproject Grids

This tool will take an existing grid and reproject the data to another projection. The user will be prompted for a destination projection and the conversion will take place. If the grid???s current projection cannot be determined, the user will be prompted to specify the current data projection as well.

Change Grid Formats

This tool will allow the user to convert from one grid storage format to another. This tool also allows resampling of the grid during conversion. Conversion between formats would be between ESRI Grid to USU Binary Grid, for instance, while a resampling would be changing the data type from integer to double.

Create Grid Images

This tool will create a georeferenced image of the grid???s data content according to one of several preset coloring schemes which the user will be prompted to select from. These include ???Desert???, ???Fall Leaves???, ???Summer Mountains???, and ???Valley Fires???, among others.

Merge Grids

This tool will take two or more grids and merge them into one grid. Any area where data is missing will be filled in automatically with the grid???s No Data value. Input grids should all be in the same projection.

Resample Grids

This tool will allow the user to resample the grid from one data type to another. An example would be changing the data type from integer to double.

Clip Grid With Polygon

This tool allows the user to clip part of a grid with a polygon.

Georeference Image or Grid

This tool is for registering an image to a Geo-Spatial reference system by specifying the location of three points on the image

Generate Contour Shapefile

This tool will create a shapefile with contour lines showing the values in the input raster data file.

Change NoData Value

This tool allows the user to change the color value for No Data cells

GISTools:Vector section

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