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EC: Contour__Grid extracting
The Extracting command creates a subset of an existing grid file. Grid files consist of rows and columns (lines of constant Y and X value) containing M values. When you extract information from a grid file, you can specify the starting and ending rows and columns to extract.
1. Click [Contour] | [Extracting] command, pop up [Grid extracting].
2. First and Last
The First and Last boxes show the first and last rows and columns from the input grid file. The number of nodes and the map coordinates are displayed to the right. As you change the First and Last values, the number of nodes and map coordinates change accordingly.
Interval number of rows or columns.