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To reset measurement results it is necessary to delete all data of Default.kml and close it and then remove ?Contour lines? from ?Measurements? folder of ?Layers and Objects? list. By opening the saved file you can view the contour lines, you have created previously. To do that click the right mouse button on Default.kml item of ?Layers and Objects? list and select ?Save As?. It is also possible to save calculated contour lines to KML file and display them again. When calculation is finished, contour lines are displayed inside the polygon selected: Performance tip: the more surface area you have selected, the more should be values of contour interval and DEM resolution to keep optimal calculation performance.Īfter settings is complete, press ?Calculate? button of ?Properties? window. In addition, start height can be set, if necessary. It is possible to set a value of contour interval (elevation between neighbor contour lines) and DEM resolution (distance between neighbor points in a contour line). Select Tools > Contour lines user menu option:Ĭreate the polygon to build contour lines within it: Open ortophotomosaic and DEM by clicking Document > Open, then select files and press ?Open?. ?Contour lines? tool displays lines, which connect points with similar elevation values. To reset measurement results it is necessary to delete all data of Default.kml and close it and then remove ?Area? from ?Measurements? folder of ?Layers and Objects? list.
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Select ?Tools?Information? option and then click the left mouse button on a polygon loaded: Next, after opening KML file you have saved, it is possible to display an area value. Click at the Default.kml item of ?Layers and Objects? list using the right mouse button and select ?Save as?. It is possible to save the polygon created to KML file and load it again to display the previously calculated value of an area. After polygon creation is finished, its total square in square meters and hectares can be viewed in the ?Properties? window. Press ?Area? button and create a polygon by selecting three or more points at a surface of DEM:Īrea value recalculates every time you add a new point. ?Area? tool displays surface area of 2D projection of a polygon, located at an ortophotomosaic / DEM. Press ?Ruler? button three times to reset measurement results. ?Ruler? tool displays distance between two points located at an ortophotomosaic or DEM. Press ?Ruler? button and select 2 points by clicking the left mouse button: Press ?Corner ruler? button twice to reset measurement results. Move the cursor to the point and after color is changed, move the point by the surface, holding left mouse button pressed. You can move selected points while using ?Ruler? and ?Corner ruler? tools and watch how parameters are changing. Now you can see the ruler with all parameters calculated: Press ?Corner ruler? button and select 2 points by clicking the left mouse button. ?Corner ruler? tool displays slope, horizontal distance, actual distance and elevation between two points located at an ortophotomosaic / DEM / DTM. To measure elevation, slope, distance or surface area you can use the range of tools: ? Corner ruler? (1), ? Ruler? (2) and ? Area? (3). Measuring distances, slopes, elevations, areas in Sputnik GIS
#Swissknife trial trial
You can download 30-day trial version of Sputnik GIS for Windows 7 / 8 / 10 (圆4) at the Sputnik GIS webpage or use direct linkĪlso, you can download sample dataset for the next tutorials in KMZ or GeoTIFF data format. Make a kriging-interpolation for DSM to DTM transformation Compare two DEMs of a region captured with a time interval Measure elevation, slope, distance or surface area of DEM Sputnik GIS allows to perform different kinds of measurements and analasys of KMZ and GeoTIFF digital terrain models and digital elevation models: