Explore Mars with JMARS
Seeing Your Feature in 3D
JMARS can model your main screen view as a 3D View and as a 3D layer.
3D View: 3D Layer:
To create a 3D View, click the 3D icon to change the gray to white in the layer management layer you want modeled. Then, click on the globe icon, , in the “Quick Access” section (lower left corner) of JMARS.
To create a 3D Layer, click the 3 vertical dots in blue Layer Manager row. Click “3D layer”. Set desired parameters in the pop-up window. See Additional hints below. Update scene after changes.
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Additional Hints:
1. New Great JMARS tutorials are:
2. To declutter your map, click off the overlay layer “Nomenclature”.
3. First adjust the zoom level and location to the area of interest.
4. In the 3D Layer pop-up window, (3d viewer Options) under scaling, you can manually change the vertical exaggeration or under MODE use "Range of values", which automatically chooses a good range of values for your image. Manually, type in an exaggeration in the “VERTICAL EXAGGERATION“ box as needed. By default, the chosen exaggeration is multiplied by 2 if you double click. Click enter. See below for a comparison between scaling modes. I like the Range Value choice.
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3 scaling options:
Auto Scaling: Is JMARS way of guessing the appropriate range of the image. Auto scaling automatically scales the data using the radius of Mars. So this option is best used with large ranges of Elevation Change
Standard Deviation: Uses the Standard Deviation of the dataset to draw the vertical scaling. If the dataset has a small Standard Deviation, the vertical stretch in the 3D Window will be very small. Best used with the Elevation or Numeric sources.
Range Values: Uses the Max and Min values and excludes the ignore value of the dataset to draw the vertical scaling. Best used with Elevation and Numeric data. NOTE: When using stamps as your elevation source, Zoom in on your main screen to eliminate area that isn't covered by the elevation data.
source: https://jmars.mars.asu.edu/3d-layer
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5. In the "3D viewer Options window”, under "Map Source", click the blue outlined "Set Vertical Source" box, and select "HRSC MOLA Blended DEM 200mv2". Click OK. This source has more data points.
6. Click, hold and drag around the “3D viewer Options “pop up window. It will change the perspective to show elevation. See the image below.
7. You can adjust the transparency slider in the layer to turn off or dim the layer as needed.
