Modify Map Area
- Full data set-- Zoom out to show entire data set.
(graphical) & zoom. Pick the NW corner of your area
of interest with a left mouse click, and then drag to the SE corner.
Once you release the left mouse button the newly defined area of the
map will be displayed at a larger scale. This can avoid scroll bars,
or running out of memory.
- Undoes last graphical resize.
- Zoom in--makes
map larger with same coverage area. Enter desired
zoom factor, or accept the default 2X (200%) setting, then click on
the OK button to redraw the screen at the larger scale. The
map will get larger, and scroll bars may appear if it does not fit
the current screen size. At some point you will run out of
- 1:1 view:
(best resolution view of the
- Zoom out--makes
map smaller with same coverage area. Enter the desired zoom
factor, or accept the default 2X (200%) setting, then click on the
OK button to redraw the screen at the smaller scale. The map
will get smaller.
- Custom zoom: pick zoom factor.
- Custom image size--set map size in pixels. The
final result will be the largest map that preserves the aspect ratio
and fits within your selection.
- Keyboard corners--pick the NW and SE corners of the grid,
and the map will zoom to that extent. You can also pick in
terms of the extent of the display in terms of the data grid.
- Set map pixel size--set map pixel size
This popup is invoked by Modify menu choice
on Map child window or by
right click on the map
window. The most important choices are also available with buttons on the map toolbar
Last revision 7/24/2015