Setting the Scale and Adjusting Paper Size in ArcMap
outline:
A. Changing the units of measurement in the data frame.
B. Setting the scale
C. Adjusting paper size
D. Exporting the image
In order to use these instructions, you must have ArcMap 9.x. This example is
going to be a continuation of the Property Data Map/City of Toronto
Orthophoto Overlay in ArcMap 9.0 procedure that can be found at the following
link: http://www.ryerson.ca/madar/geospatial/how_to/PDMORTHONOV1.pdf
The PDM/Orthophoto Overlay procedure demonstrated how to download PDMs
and orthophots from the MADAR website, open them in ArcMap 9.x, and then
export them to another file format.
NOTE: Complete steps 1-6 in the Property Data Map/City of Toronto
Orthophoto Overlay in ArcMap 9.0.
A. Changing the Units of Measurement in the Data Frame
Changing the units of measurement in a data frame allows the user to set a
common standard. Once set, all measurement functions carried out in ArcMap
will be in the specified unit of measurement.
The user has two options to get to the Data Frame Properties.
1. Right click the Layers heading, then in the ensuing drop down menu click
Properties.
OR:
2. From the main menu click View, then in the ensuing drop down menu
click Data Frame Properties.
3. In the Data Frame Properties window select the General tab.
4. In the Units subheading select the desired unit of measurement using the
drop down arrow for both Map and Display. If the Map drop down
window is grayed out then only select the Display unit of measurement.
In this example select Meters for Map and Display then click OK.
B. Setting the Scale
A map's scale is a ratio that relates a unit of measure on a map to some number
of the same units of measure on the earth's surface. One advantage of digital
maps is that one can change the zoom extent by changing the scale.
1. In the Map Scale text box simply type in the desired scale. Example:
1:1000. Alternatively, use the drop down arrow to select one of the more
commonly used map scales.
OR
C. Adjusting Paper Size
It may be necessary to adjust the paper size because once a scale is set the
desired portions of the image may be left out of the print range. To include these
omitted objects, the paper size must be increased. The process of selecting an
ideal paper size may be carried out more than once as you will see in the
following example.
In this example we will focus on the image below which is an orthophoto
(Woodbine Centre Mall located in North Etobicoke) being co-displayed with a
property data map.
The goal of this example is to adjust the paper size so that the entire mall fills the
layout view at a scale of 1:1000.
1. Use the Zoom In icon located on the toolbar to zoom in to the desired
region. In this example, the target is the mall.
2. Change to a layout view by clicking View from the main menu and then
selecting Layout View.
3. Once the unit of measurement has been selected (see Section A) and the
image scale has been set to 1:1000 (see Section B) click File from the
main menu then select Page and Print Setup in the drop down menu.
4. In the Name textbox select Adobe PDF. In the bottom right corner of the
window check the box next to Scale Map Elements proportionately to
changes in Page Size then click the Properties button.
5. Select the Layout tab located in the top right corner of window then click
the Advanced button.
6. In the Paper Size drop down menu select Post Script Custom Page
Size. BEFORE you click OK, you must adjust the width dimensions.
Remember, for this example we are trying to capture the entire mall at a
scale of 1:1000. The default settings should be 8.5 width x 11 height. We
know that at these dimensions the mall does not fit in the layout view, thus
we will increase the width by 2.5 and the height by 3 (width =11, height =
14). Click OK four times until you get back to the Layout view.
7. When the page dimensions were changed, the scale may have also been
altered, change the scale back to 1:1000. Use the Pan tool to centre the
image on the mall. In addition, you can click on the Select Elements
arrow to widen the image so that it fills the print region (see image below).
Despite the changes, as you can see below, the image does not capture the
entire mall at a scale of 1:1000.
8. The solution is to add a few more inches to the width and height. Repeat
steps 4 through 7: Add three inches to the width and height (width = 14,
height = 17). If done correctly, your image should look like the one below.
In most cases you will not select the correct page dimensions on the first guess,
thus it is important to note that steps 4 through 7 may be carried out two, three or
more times until you reach an ideal page size.
D. Exporting the Image
Alternatively, you may opt to export your map and save it for later use rather than
printing your map. ArcMap offers a variety of file types that you can save your
map as. The following procedure will show you how to export your map, using
one of the various file types.
1. Once you have completed Steps 1 through 7 above or you are satisfied
with your map, you may begin the export procedure. Click File from the
main menu and Select Export Map.
2. The Export Map window will open. In the Save In window, browse to the
location that you wish to save your map. In the File Name text box, chose
an appropriate name for your map. In the Save as Type textbox select
the format that you would like to save your map in.
3. Click Save.
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