GeoTools e-Newsletter # 171:


GeoTools e-Newsletter # 171:

September 13, 2006
Bangalore, India


GeoTools V 7.10 update:

Pick up this latest update from


The 'GDFViewer' add-on module is undergoing rapid changes and improvements

** New command added: GT_CONTDIST (Miscellaneous Tools - Contour Distance Spacing Tool)

The GT_CONTDIST command is an intra-contour spacing checker and contour breaking tool. Often, when the distance or spacing between two adjacent contours is too small, it is difficult to either view the contours clearly or to create un-cluttered labels to depict the contours. In such situations, it is useful to break the contours at locations where the distance between the contour and the adjacent contours on either side is less than a specified Distance Tolerance.

The GT_CONTDIST command measures from each vertex of the contour polyline, the distance on either sides of the contour being processed, and if the distance is less then the specified Distance Tolerance then that point is marked in memory for breaking. In this manner, the whole contour polyline is checked and the segments that are within the Tolerance distance from the adjacent contours are broken. This process continues till all the selected contours are processed in multiple mode.

This is a concept/requirement still evolving. Your feedback is appreciated.

** New command added: GT_CONTBREAK (Miscellaneous Tools - Break (split) objects along a polyline)

The GT_CONTBREAK command is a general purpose command to break a drawing along a boundary. The boundary can be open or closed and must be defined as a polyline.

It is ideally suited to break up a large drawing of contours or other geographical features into smaller drawings. The breaking is performed along the breaking (or cutting) edge. The objects that can be broken along the cutting edge are a 2d polyline, 2d line, arcs and splines. After this command has run, the objects will be split (or broken) on either side of the cutting edge. Nothing is erased from the drawing.


The 'GDFViewer' add-on which was released with GeoTools 7.09 is rapidly growing and adding new commands, fixes and improvements. We have improved upon the GDF Viewer user manual in this update and also added some background infromation and a GDF primer.


Important note: While all of GeoTools commands are tested quite extensively before they are released, it is humanly impossible to test-run it under every different data type or operating environment. In the event that you notice any GeoTools command not functioning as expected, please bring it to our notice asap. We will attend to it and fix the problem as soon as possible.


Thank you for your continued support. As always, we welcome feedback at all times.

**** Four Dimension Technologies ****

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