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Polygon shape to a specially designed shape

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#1
zyhuang

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Hummm the topic is a bit confusing. Let me try to explain it a little better. I have some polygons with some attributes. I would like to display cretain attributes graphically.

An example: I have a randomly shaped polygon with four attribute fields. I would like that polygon to display as a circle with four pieces on my map. Each piece would represent a field in the attribute table.

Does anyone know if this is possible with just ArcGIS, some other type of software, or just plain possible?

#2
David Medeiros

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Hummm the topic is a bit confusing. Let me try to explain it a little better. I have some polygons with some attributes. I would like to display cretain attributes graphically.

An example: I have a randomly shaped polygon with four attribute fields. I would like that polygon to display as a circle with four pieces on my map. Each piece would represent a field in the attribute table.

Does anyone know if this is possible with just ArcGIS, some other type of software, or just plain possible?


Like a Pie Chart?

http://help.arcgis.c...00000016000000/

GIS Reference and Instruction Specialist, Stanford Geospatial Center.

 

www.mapbliss.com

 


#3
Dragons8mycat

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If you wish to show each segment a different colour or display different information you need to cut the polygon into 4 parts, this will create 4 new columns in the attribute table of the polygon.
If you continue in "editor" mode, you can add values or text to these columns (probably best to create a new field called "Value" and then populate this).
You can then save your edits, go to polygon properties, the symbolise tab and then display by the field you created (or where the text is)

#4
DaveB

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Would this be 4 quarter circles or 4 "pie sections"? In the case of the former, you would need quarter circle symbols for each quarter. Then presumably you would vary the fill or possibly the size (radius) to represent different values in the attributes for each quarter circle. In the case of "pie sections" it's a matter of using pie charts, like David said.
Dave Barnes
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Map Geek

#5
zyhuang

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Thanks for the quick responses.

I would prefer them to be four quarters of fixed size, but I will try the Pie chart and see how that works. Will update you guys.

#6
P.Raposo

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Hi zyhuang,

If you're keeping the four sections of the circle the same size, you're left with these graphical variables: hue, value (i.e., bright-dark), texture, orientation (if you're willing to change that), and position (i.e., Bertin's visual variables, with size and shape taken out). If your attributes are quantitative on a ratio scale, value is a safe bet. If your data is qualitative, hue, texture, and orientation might be useful. From the sounds of it, a legend for the reader would be important whichever of these ways are taken.

P




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