Converting Survey Points to 3D Contours · Converting Survey Points to 3D Contours Firstly insert...

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Converting Survey Points to 3D Contours Firstly insert field survey data points into Autocad (See Recon to Autocad Guide) Then create feature outline e.g. ditch outline, slots, baulks etc. Save as a .dxf file and select the points required for the 3D contoured area (select tools tab after selecting save as .dxf and tick select points box) Then open the .dxf file just created and the isolated points selected should only be present

Transcript of Converting Survey Points to 3D Contours · Converting Survey Points to 3D Contours Firstly insert...

Converting Survey Points to 3D Contours

Firstly insert field survey data points into Autocad (See Recon to Autocad Guide) Then create feature outline e.g. ditch outline, slots, baulks etc.

Save as a .dxf file and select the points required for the 3D contoured area (select tools tab after selecting save as .dxf and tick select points box)

Then open the .dxf file just created and the isolated points selected should only be present

Open the program Dxf2xyz 2.0, select the .dxf file just created and then click save (file name).xyz in the upper right corner

A conversion complete message should come up in the lower left message box

Before you convert to the xyz format you should make sure the points box is selected in the Entities window

Now open Surfer (this version is Surfer 8) choose the spreadsheet form and select Import from the File pulldown menu

Select All Files from the Files of type line Then select the newly Created .xyz file and Open

Now save this file as a Golden Software Data file

Select the above options in the export tab

Now choose the New option from the File pulldown and select Plot Document

Now choose Data from the Grid pulldown

Open the newly created .dat file which should be accompanied by a Grid icon

Kriging method should be selected and I choose to deselect the Grid Report box

A Grid file created window should spring up

Now create a New Contour Map

Select the Grid file required to produce the contour map

A sparsely occupied contour map should now have been created

Double clicking the map will display a Contours Properties window

Tick smooth contours and select high amount

Click on the Levels tab and reduce the interval for the creation of contours to 0.01m

The Contour Map should now be more detailed Deselect the Axis boxes in the Object Manager window to the right of the screen

Choose to create a wireframe map from the Map pulldown

Now Select All from the Edit pulldown

Now choose to Overlay Maps in the Map pulldown

Deselect the Axis boxes as well as the Wireframe box in the Object Manager window before selecting Export Contours

Save the 3D contour map as a .dxf file

The 3D contoured ditch slot should now be opened in Autocad and

saved as a .dwg

The created .dwg file can now be imported and bound into the master site file and trimmed to fit the extents of the slot