shrug-l: Autobuffering(?!?!?)

Sykes, John John.Sykes@dep.state.fl.us
Thu, 29 Sep 2005 13:15:32 -0400


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I thought of this option, but it only gives you the nearest station.  =
Since
you are comparing a layer to itself, the nearest station is the one =
where the
distance is "0", i.e., itself.
=20
-- John=20
=20

  _____ =20

From: Adam Carnow [mailto:AdamCarnow@WilsonMiller.com]=20
Sent: Thursday, September 29, 2005 12:56 PM
To: Sykes, John
Subject: RE: shrug-l: Autobuffering(?!?!?)


You may want to try a spatial join - the nearest option.  Look it up in =
the
ArcGIS desktop help.  It is designed to work with 2 layers but it might =
work
with one.  It will calculate the distance (as the crow flies, not along =
a
street network) to the nearest feature and add it as an attribute to the
resultant layer.
=20
Let me know if this works,
=20
Adam M. Carnow, AICP
Corporate GIS Manager
Vice President
=20
TEL: 813-223-9500 x245
FAX: 813-223-0009
=20
WilsonMiller.com <http://www.wilsonmiller.com/>=20
=20
-----Original Message-----
From: shrug-l-admin@lists.dep.state.fl.us
[mailto:shrug-l-admin@lists.dep.state.fl.us]
Sent: Thursday, September 29, 2005 11:54 AM
To: shrug-L@lists.dep.state.fl.us
Subject: shrug-l: Autobuffering(?!?!?)



	Here's a hypothetical question.=20

	It's easy to select a layer, create a buffer around it's features and
select the information from other layers that intersects or falls =
completely
within that buffer (you can use Select by Location, Edit Toolbar or the
Buffer Wizard).

	But how about buffering a layer within itself?=20

	Confused?  Here's an example of what I am looking for (purely
theoretical).=20

	Suppose I have a shapefile with points representing all the 100 Fire
Stations in a major city.  The city manager wants to know which Fire =
Stations
are within 2 miles of another Fire Station, with the thought that some =
of
these redundant stations could be closed and the resources better =
utilized.
How do I create a buffer that would show this? or is using buffers even =
the
right way to go about it?  Keep in mind that I am not a programmer, so =
I'm
not looking for a complicated script or Python program to do this.  I'm
primarily looking for interactive ways of doing this with built-in
ArcView/ArcInfo tools/commands.

	Suggestions are appreciated and, trust me, no Fire Stations are
actually subject to closure, I just thought that it was a good example.

	-- John=20


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<HTML><HEAD><TITLE>Autobuffering(?!?!?)</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
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<BODY>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D4><SPAN=20
class=3D866471217-29092005>I thought of this option, but it only gives =
you the=20
nearest station.&nbsp; Since you are comparing a layer to itself, the =
nearest=20
station is the one where the distance is "0", i.e., =
itself.</SPAN></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D4><SPAN=20
class=3D866471217-29092005></SPAN></FONT>&nbsp;</DIV>
<DIV><B><FONT face=3D"Monotype Corsiva" size=3D5>-- John</FONT></B> =
</DIV>
<DIV>&nbsp;</DIV><BR>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> Adam Carnow=20
[mailto:AdamCarnow@WilsonMiller.com] <BR><B>Sent:</B> Thursday, =
September 29,=20
2005 12:56 PM<BR><B>To:</B> Sykes, John<BR><B>Subject:</B> RE: shrug-l:=20
Autobuffering(?!?!?)<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=3D988405416-29092005><FONT face=3DArial color=3D#0000ff =
size=3D2>You=20
may want to try a spatial join - the nearest option.&nbsp; Look it up in =
the=20
ArcGIS desktop help.&nbsp; It is designed to work with 2 layers but it =
might=20
work with one.&nbsp; It will calculate the distance (as the crow flies, =
not=20
along a street network) to the nearest feature and add it as an =
attribute to the=20
resultant layer.</FONT></SPAN></DIV>
<DIV><SPAN class=3D988405416-29092005><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D988405416-29092005><FONT face=3DArial color=3D#0000ff =
size=3D2>Let me=20
know if this works,</FONT></SPAN></DIV>
<DIV><SPAN class=3D988405416-29092005><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D988405416-29092005><FONT face=3DArial color=3D#0000ff =
size=3D2>
<DIV><FONT face=3DArial><STRONG>Adam M. Carnow, =
AICP</STRONG></FONT></DIV>
<DIV><FONT face=3DArial>Corporate GIS Manager</FONT></DIV>
<DIV><FONT face=3DArial>Vice President</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>TEL: 813-223-9500 x245</FONT></DIV>
<DIV><FONT face=3DArial>FAX: 813-223-0009</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial color=3D#000080><STRONG><EM><A=20
href=3D"http://www.wilsonmiller.com/">WilsonMiller.com</A></EM></STRONG><=
/FONT></DIV>
<DIV>&nbsp;</DIV></FONT></SPAN><FONT face=3DTahoma =
size=3D2>-----Original=20
Message-----<BR><B>From:</B> shrug-l-admin@lists.dep.state.fl.us=20
[mailto:shrug-l-admin@lists.dep.state.fl.us]<BR><B>Sent:</B> Thursday, =
September=20
29, 2005 11:54 AM<BR><B>To:</B> =
shrug-L@lists.dep.state.fl.us<BR><B>Subject:</B>=20
shrug-l: Autobuffering(?!?!?)<BR><BR></FONT></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px"><!-- Converted from =
text/rtf format -->
  <P><FONT face=3DArial size=3D4>Here's a hypothetical question.</FONT> =
</P>
  <P><FONT face=3DArial size=3D4>It's easy to select a layer, create a =
buffer around=20
  it's features and select the information from other layers that =
intersects or=20
  falls completely within that buffer (you can use Select by Location, =
Edit=20
  Toolbar or the Buffer Wizard).</FONT></P>
  <P><FONT face=3DArial size=3D4>But how about buffering a layer within=20
  itself?</FONT> </P>
  <P><FONT face=3DArial size=3D4>Confused?&nbsp; Here's an example of =
what I am=20
  looking for (purely theoretical).</FONT> </P>
  <P><FONT face=3DArial size=3D4>Suppose I have a shapefile with points =
representing=20
  all the 100 Fire Stations in a major city.&nbsp; The city manager =
wants to=20
  know which Fire Stations are within 2 miles of another Fire Station, =
with the=20
  thought that some of these redundant stations could be closed and the=20
  resources better utilized.&nbsp; How do I create a buffer that would =
show=20
  this? or is using buffers even the right way to go about it?&nbsp; =
Keep in=20
  mind that I am not a programmer, so I'm not looking for a complicated =
script=20
  or Python program to do this.&nbsp; I'm primarily looking for =
interactive ways=20
  of doing this with built-in ArcView/ArcInfo tools/commands.</FONT></P>
  <P><FONT face=3DArial size=3D4>Suggestions are appreciated and, trust =
me, no Fire=20
  Stations are actually subject to closure, I just thought that it was a =
good=20
  example.</FONT></P>
  <P><B><FONT face=3D"Monotype Corsiva" size=3D5>-- John</FONT></B>=20
</P></BLOCKQUOTE></BODY></HTML>

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