About Map Images
A map image is a rectangular object that
contains a cached image of a part of the online map. Map images embed
themselves in the drawing area at the correct geographic coordinates.
Creating Map Images
You can create a map image by capturing the online map displayed in a
layout viewport or the current view on the Model tab. You can also
create a map image by capturing a rectangular area on the online map.
Map images are created on the current layer, on the WCS or on a plane
parallel to the WCS. Map images embed themselves at the bottom of the
draw order, just above the online map.
Map Images Versus the Online Map
Map
images zoom in and zoom out just like raster images. Unlike the online
map, they neither change in resolution nor do they add or remove
details. Only the magnification changes.
Just
as with the online map, the map image maintains a link with the online
maps service. Thus, you can download fresh map imagery from the online
maps service and update the map image on demand. You can also change the
resolution of the map image by updating it with imagery of a different
resolution.
Unlike
the online map, map images are not a temporary graphics, and you can
plot and display map images even if you are not connected to your
Autodesk account. Since they are saved with the drawing, the imagery
does not change unless you update or edit the map image.
Grip Edit Behavior
Map
images are bounded by a rectangular border. This border behaves like a
layout viewport border. If you enlarge the map image by grip editing its
border, the imagery does not resize. Instead, the border expands to
display more of the map imagery.
If you rotate a map image by grip editing its border, it rotates and
displays the underlying map imagery of the new area it covers.
Similarly, if you move the map image by dragging the border, it moves
and displays the underlying map imagery of that area.
Every
time you grip edit a map image, it retrieves fresh imagery from online
maps service to fill the new area covered by the border. Thus, you can
edit map images only if you are signed in to your Autodesk account.
You can lock the layer containing a map image so that you cannot delete it, move it or resize it by accident.
Note: If you grip edit a map image
while you are not connected to the Internet, the map image goes blank.
As soon as you sign in to your Autodesk account, the map image retrieves
fresh imagery from the online maps service.
Visual Enhancements
Typically,
the optimal resolution for on-screen viewing is not optimal for
plotting. You can control the resolution of map images to minimize
pixelation during plotting. When you change the resolution, the map
image retrieves fresh imagery from the online maps service. Thus, you
can change the resolution only if you are signed in to your Autodesk
account.
You
can use the IMAGEADJUST command to control the brightness, contrast and
fade settings of map images. This ability lets you rectify visibility
issues if the geometry on top of the map is not clearly visible against
the image map.
Restrictions
The following edit commands cannot be used on map images:
- ARRAY - Map images cannot be arrayed. They are filtered out when you select them.
- TRIM/EXTEND - Map images cannot be trimmed or extended. However, you can use a map image border as an edge for trimming and extending other objects.
- COPY/COPYCLIP - Map images cannot be copied.
- MIRROR - Map images cannot be mirrored.
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