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Grid Functions
In addition to creating maps, you can perform a variety of functions using grid files. Just a few of the possibilities include:
- Calculating the volume and areas of grid files! You can calculate the planar and surface area, and calculate the volume between two grid files, or a grid file and any horizontal plane.
- Applying a mathematical equation to grid files. Examples include subtracting one grid file from another to create an isopach map, converting outliers to a minimum or maximum value, or multiplying one grid file by a conversion factor to convert the Z units from meters to feet.
- Applying grid filters to emphasize details or remove background variation in the grid file.
- Blanking specified regions in a grid file to prevent contours or map data from being drawn through those areas (ie. buildings, roads, or outside of field areas).
- Creating cross sections and topographical profiles.
- Combining multiple grid files into a single, easy to use grid file.
- Extracting subsets of grids or DEMs based on rows and columns.
- Transforming, offset, rescale, rotate, and mirror grids.
- Smoothing grid files to create smoother maps.
- Calculating first and second directional derivatives at user-specified orientations.
- Calculating differential and integral operators utilizing gradient, Laplacian, biharmonic, and integrated volume operators.
- Analyzing your data with Fourier and Spectral Analysis with Correlograms and
Periodogram.
- Calculating residuals to find the difference between the original data point values the interpolated Z values at those points, or to find the Z values at any specific XY locations.
- Interactively editing individual grid node values.
Supported grid file formats are: ADF, AM, AN?, ASI, BIL, BIN, BIP, BMP, BSQ, BW, COL, CPS-3, DAT, DCM, DDF, DEM, DIC, DOS, DT?, ECW, ERS, FLD, FLT, GIF, GRD, GXF, HDF, HDR, IMG, INFO, JPEG, JPG, LAT, PCX, PNG, PNM/PPM/PGM/PBM, RAS, RAW, RGB, RGBA, RST, SID, STK, SUN, TGA, TIF, TIFF, VTK, X, XIMG, ZMAP, and ?10g.
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