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Topography file format

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ERTLab employs keywords (tags) to indicate subsets of a data file and configuration information. Currently, the topography file should contain only topography information. Ultimately this information may be combined into files that also contain quadrapole data and the mesh configuration. Each keyword starts with the # symbol. The comment character is !. Any  information placed between ! and the end of a file line is ignored. Blank lines are also ignored.

The Topography format requires an #topo_start keyword to indicate the start of the  topography listing and an #topo_end keyword to indicate the end of the list.
In absence of further tags, the topography is loaded, in the Inversion or Forward modeling workspace, on the basis of the I/O format parameters specified in the configuration settings list.

Topography input format can be included in the topography file by using the appropriate configuration tags. The configuration information may include:

#topo_x_col, column identifier for the X location;
#topo_y_col, column identifier for the Y location;
#topo_z_col, column identifier for the Z location;

The complete list of possible commands is documented in the example below:

#TOPO_X_col=2
#TOPO_Y_col=3
#TOPO_Z_col=4
#TOPO_Start
SurveyControl1     100001     1100020     351
SurveyControl2     100010     1100001     357
SurveyControl3     100101     1100045     348
SurveyControl4     100007     1100106     355
SurveyControl5     100025     1100092     352
SurveyControl6     100076     1100060     358
SurveyControl7     100051     1100044     349
SurveyControl8     100021     1100036     350
SurveyControl9     100019     1100082     353
SurveyControl10    100005     1100011     355
#TOPO_End

 



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