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You can smooth the contours after they have been generated.
- Select them with the Digitizer Tool
- Right-click > Move/Reshape Feature(s) > Resample/Split Selected Features(s) at Specified Spacing
- Choose Sample Features at Fixed Distance Interval
- Enter the Spacing Distance e.g. 5 or 10 meters
- With the contours still selected Right-click > Move/Reshape Feature(s) > Smooth
By the way if you want to clip the SRTM to your boundary you can select the boundary be fore you select the online data source and choose the option at the bottom to Download Within the Currently Selected Polygon(s).
Note that the resolution of SRTM data is relatively coarse. In the north-south direction, one degree (of latitude) is about 111,120m, and your resolution (Y-axis) is about 0.0003433 per degree, so one pixel is about 38m. Drawing contours at an interval of 0.5m may not provide the results that you would like. It depends upon the topography, with flatter terrain being easier to contour at a small contour interval. More interesting terrain may wind up with contours that are more jagged and/or overlapping. If you select smooth contours, that may increase overlapping. Drainages may show low sections that don't "flow" smoothly. All of these settings work together and can conflict, like in your results: large pixels, small contour interval, with smoothing.As sphillips suggests, adjusting simplification may help. A larger contour interval may help. You get to play with the settings to find the values that work best for you. (data with greater resolution will help the most, but we certainly understand when better data are not available).
Upon further review, there is a way to avoid this when loading <filename>.pdf:1) On the first rectification dialog, after creating control points, save a .gcp or .pfw file named <filename>.gcp or <filename>.pfw (this is the default action when you choose File | Save ... on the rectification dialog.)2) On the first projection selection dialog, select the projection and put a check next to "Use Selected Projection for All Selected Files"The import will proceed without asking for any more information.
The feature request for the ability to save and reload camera position in the 3D Viewer is still in our queue. I have added your requests to our issue tracker, which should bump up its priority. Having just released Global Mapper 21.0, we are finalizing the list of features to be included in version 21.1, so you timing is pretty good. We will post back on this thread when the status of the feature request changes.
Thanks, Bob, that sounds encouraging. Can I also repeat a request from above: "I would really like to be able to set a XY coordinate and height above ground (or Z), direction and FOV in the 3D View". This would allow precision location of the camera, as opposed to whatever is loosely achievable by mouse dragging. It should also be possible to rotate the camera left/right and up/down (preferably with a readout of degrees from north and above/below horizon). The FoV should be Horizontal FoV to match the basics of a camera lens.And all by tomorrow please
Another thing that you can do is add elevations to all of the features in your shape file using the Attribute Calculator. This tool can be used to add new attributes to features or modify existing attributes using a formula: In this case, you will be creating a new attribute named "ELEVATION" to all features in your shape file, and assign ieach a value in meters. Just for the sake of example, let's assume that the elevation will be 80 meters.
* Load your shape file
* From the main menu, Layer --> Calculate/Copy Attribute Value(s)
* In the "Select existing or create new attribute to assign calculated values to" field, type: ELEVATION. That's the new attribute you'll be adding.
* Select Use formula calculation, and in the Enter formula: edit box, type: 80
* Click on "Calculate"
At this point, you should be able to go into the Attributes Editor to verify that all of your features now have an attribute named "ELEVATION", with a value of 80.
Hope that this helps. Cheers,
It sounds like you want to split an export based on an attribute value. To do this:
- Load your data into Global Mapper
- Choose File | Export | Export Vector/Lidar Format... and select Shapefile from the list of formats.
- On the Shapefile Export Options screen, use the list next to "Split Export Based On:" to choose the attribute you want to use to split your data.