beanus Posted March 7, 2011 Share Posted March 7, 2011 when using the terrain-create site model tool the contours created dont always follow the spot heights (see attached) is there a way to correct this? Quote Link to comment
Vectorworks, Inc Employee Tamsin Slatter Posted March 7, 2011 Vectorworks, Inc Employee Share Posted March 7, 2011 The contours are interpolated - they will not necessarily follow spot heights. Imagine you have a spot height at 10.5 metres and another at 11.5 metres. If you have contours showing every 1 metre of height change, then the contour will work out where the 11 metre line is between these two points. To get contours closer to the spot heights, decrease the contour interval - this will give you more contours, but they will inevitably be closer to your spot heights. Hope that helps Quote Link to comment
beanus Posted March 7, 2011 Author Share Posted March 7, 2011 decreasing the contour interval made no difference any other sugestions Quote Link to comment
Vectorworks, Inc Employee Tamsin Slatter Posted March 7, 2011 Vectorworks, Inc Employee Share Posted March 7, 2011 Can I ask why you want the contours to pass through the spot heights? They are, by nature, showing different things. Quote Link to comment
gScott Posted March 7, 2011 Share Posted March 7, 2011 add more "spot heights" to the source data where you want the detail to be more accurate. i.e. give the DTM more to work with; but only if you know the site well enough to be making up data! Quote Link to comment
orlando Teixeira Posted March 9, 2011 Share Posted March 9, 2011 hello beanus well modelling terrain is sometime very painfull. Picking your example and using 85m line put more 3d loci with up and down values depending on your terrain like 85,5 and 84,5 (for example) nearby your line. If i am not being very understandable see file attached regards p.s. by the way if you have information use the most of it and use curve lines and 3d loci together for most acurate Quote Link to comment
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