Compression and optimization of a matrix

The Optimization of matrixes mode is recommended to be used after editing a matrix map, after multiple settings of the matrix border, when the matrix image does not match at different display scales, and also to reduce the size of the matrix file.

Mode is intended for regulating of header, blocks of the image and other auxiliary matrix structures.The mode processes matrixes of heights MTW and matrixes of qualities MTQ.

Processings modes:

- Optimization of matrixes mode will be used for regulating  of header, blocks of the image and other auxiliary matrix structures.

ATTENTION: compression can be applied to matrixes with the size of an element equal to 4 bytes.

- Compression of matrixes mode arranges header and other auxiliary matrix structures, packs blocks of the image, essentially reducing size of the file.

- Decompression of matrixes mode will be used for uncompression of packed matrix.

- Optimization of a packed matrix mode will be used for regulating of header, blocks of the image and other auxiliary structures of an oblate matrix. The matrix remains packed after execution of the this mode.

- Changing the parameters of the matrix mode is designed to change the parameters of the height matrix with file conversion.

Additional options:  

- Copy of a source file option keeps on the disk a backup copy of a matrix map. The backup copy of a matrix is created with a name *. ~ MW.

- To cut an image on a border option is available when processing a matrix map with the installed framework. After execution of the process of optimization or compression using this option the output file will contain only the image area limited by the external dimensions of the border.

- The option Creation of the survey image of a matrix starts a mode of creating a reduced copy of a matrix directly after an execution of process of optimization (compression) of a matrix.

- The option Updating of a window after mode end carries out updating a window of a map directly after the execution of process of optimization (compression) of a matrix.

Way of activation of the mode Compression and optimization of the matrix data:

1. In the Matrix list dialog (View \  Matrix list) to select a matrix for compression or optimization.

2. Click on the Properties button;

3. Select Optimization item from the appeared menu.

Changing the parameters of the matrix

The mode is designed to change the parameters of the height matrix with file conversion. The use of the mode is recommended to reduce the size of the matrix file.

During the execution of the mode, the following parameters can be changed:

•  scale of displaying the matrix of heights,

•  accuracy of the matrix of heights (meters/element),

•  height unit of measurements.