7.1.3 SHOW_OBS4

The calling sequence of SHOW_OBS4 is the same as SHOW_OBS3, except there are a few additional options in SHOW_OBS4. Run SHOW_OBS4 with one of the following commands:
IDL> show_obs4, roadmap
 
IDL> show_obs4, index
It is possible to click on a time range for a closer look by:

1. Clicking with the left button at the start time
2. Clicking with the right button at the end time
3. Clicking with the left button on the box in the lower right
4. If you wish to exit, click with the middle button somewhere on the plot

It is possible to select several regions using the following steps.

1. Click with the right button on the box in the lower left (Select Option). A square box should appear on the screen.
2. Click and hold the left button on the lower left corner of the box and drag the box to the lower left corner of the region you want to select, then release.
3. Click and hold the middle button on the upper right corner of the box and stretch the box to encompass the images you want to select.
4. Repeat steps 2 and 3 until you have positioned the box where you want it.
5. Click on the right button to exit the selection option when you have successfully positioned the box.
6. Now you can exit SHOW_OBS4 by clicking on the middle button, or you can select another set of images by running steps 1 through 5 again.