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Process Help WFTREND - extend a wireframe along a planar trend beyond the data limits |
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Process Name |
Menu Path |
Link to Command Table |
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WFTREND |
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Introduction
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This is a Superprocess and running it may have an effect on other Datamine files in the project. More... |
This process creates a DTM wireframe surface which can be extended beyond the data limits by a specified distance using a planar trend surface.
The data limits are detected automatically and the trend surface is only used beyond the limits of the actual data. The input data is a set of points which should be sorted.
Files, Fields and Parameters
Input Files
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Name |
Description |
I/O Status |
Required |
Type |
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POINTIN |
Input point data file. |
Input |
Yes |
Point Data |
Output Files
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Name |
I/O Status |
Required |
Type |
Description |
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WIRETR |
Output |
Yes |
Wireframe Triangle |
Output wireframe triangle file. |
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WIREPT |
Output |
Yes |
Wireframe Points |
Output wireframe point file. |
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POINTOU |
Output |
No |
Point Data |
Output point data file. This includes both the input point data, and the points which were extrapolated using the trend surface. |
Fields
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Name |
Description |
Source |
Required |
Type |
Default |
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XPT |
X field in input point data file. |
POINTIN |
Yes |
Numeric |
XPT |
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YPT |
Y field in input point data file. |
POINTIN |
Yes |
Numeric |
YPT |
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ZPT |
Z field in input point data file. |
POINTIN |
Yes |
Numeric |
ZPT |
Parameters
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Name |
Description |
Required |
Default |
Range |
Values |
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EXTN |
The extension distance required beyond the data points for the triangulation. |
Yes |
Undefined |
0.1,+ |
Undefined |
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GRIDINC |
Grid interval for the interpolated points beyond the limits of the original point data. |
Yes |
Undefined |
0.1,+ |
Undefined |
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TR |
Flag to indicate whether the field in the wireframe triangle file should have different values depending on whether or not the triangle is in the extrapolated area: 0 = all triangles have colour defined by parameter 1 . 1 = triangles in the area covered by POINTIN data are coloured 1 and those in the extrapolated area are coloured 2. |
No |
0 |
0,1 |
0,1 |
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1 |
Colour field for the output points and wireframe triangles for data lying within the area covered by POINTIN data. |
No |
1 |
1,64 |
Undefined |
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2 |
Colour field for the output point data file for data points which have been extrapolated. If parameter TR is set to 1, then triangles in the extrapolated area will also have this colour; otherwise they will be 1. If the parameter 2 is undefined then it will be set equal to 1. |
No |
Undefined |
1,64 |
Undefined |
