Shape Layer: Selecting a non-default column for circle-radius

The purpose of this tutorial is to walk users through the process of opening JMARS, opening the Shape Layer and selecting a non-default column for the circle-radius.

Step 1: Opening JMARS and adding the Shape Layer

    • Double-click the JMARS icon on your desktop to open JMARS
    • Enter your JMARS user name and password. If you do not have a user name and password, follow the instruction under the appropriate "Getting Started" link on the Main Page.
      • At this point, the Layer Manager should only have the MOLA Shaded Relief Layer and the Lat/Lon Layer loaded.
    • In the Layer Manager, click "Add New Layer" -> "Custom Shape Layer", then double-click on the "Custom Shape" tab to access the focus panel.

Step 2: Creating a New Column

    • In "Features" tab of the Shape Layer focus panel, select "Edit Columns..." option.
    • edit_columns.png

    • In the Edit Columns window that opens up, type the name of the new column and select its type from the Type drop-down menu. Click on "Add Column".
    • The new column name together with its type should appear in the list of columns on the left.
    • Select the "Update All Rows" check box and click "Okay".
    • The new column that you just added should appear as a column in the Features on the Shape Layer focus panel.

Step 3: Selecting the newly created column for circle radius.

    • At the top of the Shape Layer focus panel, click on "Feature" -> "Edit Circles...".
    • tutorial_images/edit_circles.png

    • In the new "Geometry Options" window that opens, select the newly created column name from the drop-down menu for the "Circle Radius Field" and select the desires unit of measurement from the" Circle Radius Scale" drop-down menu.
    • Now draw a circle in the Main View. The radius of the circle drawn will appear under the new column name (new_radius  in our case).

Congratulations! You have finished the eighth JMARS tutorial!