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Using the Crime Mapping
Viewer |
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This page will assist you in understanding the different functions of the Hopkins County Crime Map Viewer by displaying a short description of each button and how to use them. Layers and
Legend Note that some of the layers will only show up if you are zoomed into a specific level (such as aerial). Also visible is the symbology for each layer, or the map legend. |
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Toolbar
Usage When a tool is selected
from the toolbar menu, the button is highlighted with a red box
indicating it is active.
Normally, the “Zoom In” button is active when first opened. (See “Zoom
In” Tool in the graphic or the table below) |
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Layer/Legend
Toggle |
Allows the user to toggle between displays of the Map Legend
and Map Layers in the far right frame within the viewer. The
Layer view displays which layers are available at the
current scale. There are 2 options you can check for each
layer. By checking "Visible", the layer will be displayed
inside the view. By selecting "Active", you will be able to
select, query, search and identify features of this layer.
Only one layer can be active at any one time. The Refresh
Map button is used to show changes if you select or unselect
the Visible option. The Legend view displays each layer that
is visible and the graphic used to symbolize features on
that layer. |
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Zoom In
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Allows the user to zoom in by either clicking in the view
area or dragging the + cursor to create a boxed area that
will determine the extent of the new view. |
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Zoom to Full
Extent |
Allows the user to return to the original view of |
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Identify
Feature Attributes |
The Identify button allows the user to view the attributes
of a particular feature. In the Layer view in the far right
frame simply select the layer desired to be active before
using the Identify tool. It will only return attributes for
the active layer. The attributes will be displayed on the
bottom of the view area. If the desired layer/feature for
which attributes are desired isn't listed in the Layer view,
zoom in until it is displayed, then identify it.
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Zoom Out
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Allows the user to zoom out by either clicking in the view
area or dragging the + cursor to create a boxed area that
will determine the extent of the new view. |
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Pan |
The "Pan" button allows the user to take the cursor, click
on the view and while still holding the mouse button down,
drag the view in any direction to obtain a new view of the
desired area at the same scale. |
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Query Feature
Attributes |
The "Query" button allows the user to select features based
on a filter of selected fields of that feature. Hit the
Query button to call up the query frame near the bottom. In
the field area, there is a pull down menu that can be used
to select the field of interest. Then choose an operator
such as =, >, or LIKE to define a specific value of the
field. In the value box, type the value of what you're
searching for based on the field. Then hit the "Get Samples"
button to see a sampling of what can be typed in this field.
If the desired value is listed, simply click on that value.
Once all 3 fields are complete, hit the "Add to Query
String" button and hit the "Execute" button. This will
perform the query and return the results as well as zoom
into the area of interest which highlights the query
results. |
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Measure Tool
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The "Measure" button allows the user to click on 2 or more
points and return the distance in the current units (see
"Set Units" button). It keeps track of the length of the
segment as well as a running total in case there is a need
to obtain the length of a route between multiple points. The
readout is at the top of the view screen. |
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Creates Map
Layout for Printing |
This button creates a printable, simple map layout of the
current view area along with a legend in a new window. |
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For additional assistance in utilizing the viewer please contact:
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