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Knowledge Base

Intersection Magic Windows > Filters / queries

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 How to create a locations filter

September 23, 2020adminIntersection Magic Windows > Configuration

Location filters can be very useful for High Crash Location. This article describes the format of the location filters.


 How to properly use the “OR” (|) operator in a filter expression

July 6, 2020adminIntersection Magic Windows > Filters / queries

Improper use of the "OR" operator (|) can result in an undesired data set, no data at all, or all data being returned. This article is to help understand its correct use.


 How to change a filter to its “inverse”

September 23, 2020adminIntersection Magic Windows > Filters / queries

Suppose you've written a filter to show all collisions resulting from vehicles traveling in opposite directions. (i.e. east vs west or north vs south) Now suppose you want to get all the other crashes.


 Why does my filter have © and ¨ symbols in it?

July 6, 2020adminIntersection Magic Windows > Errors / crashes

The © and ¨ symbols are placeholders for a carriage return. While these symbols are generally hidden from view, they are visible in files, and in some edit controls.


 “Intersection Corridor” diagram does not include all crashes on aliased streets.

July 6, 2020adminIntersection Magic Windows > Diagrams

When a corridor diagram is created for a street which is an alias to another street, not all the crashes will be shown. The crashes included may also not include those that occured on end-point cross streets if they are aliases as well.


 Ambiguous variable / value in filter

July 6, 2020adminIntersection Magic Windows > Filters / queries

When creating a filter, the filter editor reports an "ambiguous variable" and will not let the filter be saved.


 How to list all accidents by corridor

July 6, 2020adminIntersection Magic Windows > Diagrams

Is there a way to get a accident listing along the entire length of a roadway? Yes. There are several ways. This article describes the various ways to obtain that data.


 Creating a chart that includes data from more than one diagram.

July 6, 2020adminIntersection Magic Windows > Charts

You want to create a single chart that shows the day of the week accidents occurred - but want several specific intersections on that one chart.


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