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#1
josie

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Hello,

I have a polygon which I have made in ArcGIS, lets say it is a danger zone. Around this polygon (or danger zone) I would like to make a perimeter around it which extends out from the edge of the danger zone by 50 km. How can I make a sort of buffer zone aound my polygon. It needs to be the same irregular shape but I can't seem to use the buffer tool. I thus thought I could make another polygon which has a larger area than the present one by a specified amount. So basically a box around a box, but the edges must be 50km apart exactly all the way around.

Thanks

josie

#2
mika

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Buffering smoothes the shapes - so if you wan't the new edge to be exactly 50km from the base shape you'll get a smoother line :)
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#3
josie

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I tried to use the create buffer in the command line but it didnt work. Any idea why? It said it was to do with license version.

#4
DaveB

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I tried to use the create buffer in the command line but it didnt work. Any idea why? It said it was to do with license version.

What license level do you have? Some tools are restricted to higher license levels.
What kind of data are you using (coverage? geodatabase? shapefile? other?) With lower license levels you can't do some things with some data types.
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#5
MapMedia

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I agree, the buffer tool is it. This will make a similar shape that does not intersect or otherwise go right into the danger zone.
Any old Arcview 3.x license has this function.

#6
paul

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I tried to use the create buffer in the command line but it didnt work. Any idea why? It said it was to do with license version.


You need an ArcInfo license to create a flat buffer.

#7
josie

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Ok thanks. I believe this is the problem then as the message that I get says something to do with licensing. Is there anyway to create just another polygon which is exactly 500m outwards around the perimeter of the original polygon? So it looks like a buffer but actually isn't?

#8
mika

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Do post your shapefile and I'll do it for you. Or even better mail me at: mika at miiz dot waw dot pl
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#9
François Goulet

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You need an ArcInfo license to create a flat buffer.


Josie, do you really need to do a flat buffer around your area? For what I understand, the "standard" round one would do what you need...

#10
josie

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Well the problem is that it needs to have a visible area around the shape which is the buffer zone, so that it is visible on the map. Also, 'technically' it neas to be 500m out from every edge so a general buffer is not ideal. Although if it is possible to make it visible around the area then it may do for now. However, this is what I am a little stuck with.

PS Thanks MIKA I will send it over today at some point and you can see what you think.

#11
Kalai Selvan

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Good!!!
Mika keep it up..

Well the problem is that it needs to have a visible area around the shape which is the buffer zone, so that it is visible on the map. Also, 'technically' it neas to be 500m out from every edge so a general buffer is not ideal. Although if it is possible to make it visible around the area then it may do for now. However, this is what I am a little stuck with.

PS Thanks MIKA I will send it over today at some point and you can see what you think.


Thanks and Regards
Kalai Selvan


#12
jennastics

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HELLO, ALL! I thought I'd use this thread to ask a similar question...

I know how to apply buffers around lines/polygons/points... Here's my question:

Is there a way to make buffers that have different measurements around the the shape your buffering? So, like elipse or even Mickey Mouse™ shaped buffers.

Say you have a point that needs to have a 300m buffer to the north and northeast, and 500m to other directions.

#13
Hans van der Maarel

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HELLO, ALL! I thought I'd use this thread to ask a similar question...

I know how to apply buffers around lines/polygons/points... Here's my question:

Is there a way to make buffers that have different measurements around the the shape your buffering? So, like elipse or even Mickey Mouse™ shaped buffers.

Say you have a point that needs to have a 300m buffer to the north and northeast, and 500m to other directions.


I've once created an FME custom transformer that creates buffers of different sizes to the left and right of a line: SidedBufferer
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#14
jennastics

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HELLO, ALL! I thought I'd use this thread to ask a similar question...

I know how to apply buffers around lines/polygons/points... Here's my question:

Is there a way to make buffers that have different measurements around the the shape your buffering? So, like elipse or even Mickey Mouse™ shaped buffers.

Say you have a point that needs to have a 300m buffer to the north and northeast, and 500m to other directions.


I've once created an FME custom transformer that creates buffers of different sizes to the left and right of a line: SidedBufferer




Thank you SO MUCH! :)

#15
jennastics

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Ok, another question (this board has been the most useful thing, and I'm so grateful):

Can you assign buffers to JUST selected features WITHIN a shapefile? Or, do you have to extract those features and create shapefiles seperately? And, if so... how do you do that?




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