Hi, we have imported GPS points into DWG with LL84 Coordinated System and polyline, polygon were drawn by connecting multiple GPS points in DWG. Now we need to know "How to calculate length of polyline and polygons in meters / feet?" In the properties of selected polygon object, length was shown in some fractions of decimal points but no clue about is it right? and its units (meter / feet). Would helpful if any suggestions.
Solved! Go to Solution.
Solved by ChicagoLooper. Go to Solution.
Hi @geoedge_gis,
Welcome to the Autodesk Forums.
LL84 is a Geographic Coordinate System with degree units. You can get close to what you want by MAPEXPORT'ing out your linework to a Projected Coordinate System with Feet or Meter units. But you still need to consider the effect of Elevation Scale Factor and Grid Scale Factor on the accuracy of your lengths.
Dave
Dave Stoll
Las Vegas, Nevada
Hi @geoedge_gis
Is this your site?
If it is, then start a clean, brand new drawing and do this, so you can see your points and measure distances in meters:
Chicagolooper
Thank you for valuable suggestion. I tried as you mentioned but no points was plotted in drawing area. I have attached steps to import screenshot and sample points.csv file. Could you check and correct if i made any mistakes.
Hi @geoedge_gis
Thank you for uploading your csv file.
Do this:
1. MAPCSASSIGN to assign UTM84-43N to modelspace.
2. Use MAPIMPORT to import your csv file. Make your settings like this.
3. Use a crossing window to select ALL points=>go to Properties Palette=>Change Scale-X, -Y and -Z to 200.
4. Turn on Bing imagery to use as a basemap. Verify location of your imported points.
Chicagolooper
Can't find what you're looking for? Ask the community or share your knowledge.