Re: [Geotools-gt2-users] Splitting LineStrings at their intersection
Could you confirm that you received the data you needed?
Chris.
On Jan 19, 2008 1:06 AM, Justin Deoliveira [EMAIL PROTECTED] wrote:
Hi Chris,
Sorry, its been a busy week and I have not had time to keep up with your
questions. Its not immediately evident to me what is wrong with your
code. I would have to debug it over on my end. You said your data is a
shapefile with a few thousands rows in it? If there are no licensing or
confidentiality issues is there any chance i can get my hands on it?
that way i could test over here.
If so, please send the location of the shapefile (you can in a private
email if you wish). Also the most recent version of all your code.
-justin
Chris wrote:
Sorry, it is me again but I'm still stuck with the same problem: I
tried the following
Coordinate[] c = new
Coordinate[]{(l1.getStartPoint()).getCoordinate(), p.getCoordinate()};
LineString l1a = new LineString(new CoordinateArraySequence(c), new
GeometryFactory(new PrecisionModel(
PrecisionModel.maximumPreciseValue), 4326));
l1_sub.add(l1a);
if(!l1.covers(l1a))
System.out.println(Error: a);
But this did not improve anything (Still prints Error: a). Hence, in
the following of my routine, I trying to see which sub_part of l1 is
having an intersection with l2, it happens (more than 1000 times for
my shapefile) that I can find any l1 sub_part intersecting l2.
To detect the intersection, I'm using the following code:
int k = 0;
while (k l1_sub.size() !((LineString) l1_sub.get(k)).intersects(l2)) {
++k;
}
if(k = l1_sub.size()) {
System.out.println(error);
}
I hope someone can help me with this, because of this, my graph is
not perfectly connected and this is kinda annoying. This is the last
problem in my project... thanks in advance.
P.S: I forgot to mention in my previous mail that p in the
intersection point between l1 and another linestring l2.
On Jan 15, 2008 2:12 AM, Chris [EMAIL PROTECTED] wrote:
Could you tell me what is wrong with this part of code?
Coordinate[] c = new Coordinate[]{(l1.getStartPoint()).getCoordinate(),
p.getCoordinate()};
LineString l1a = new LineString(new CoordinateArraySequence(c), new
GeometryFactory());
l1_sub.add(l1a);
if(!l1.covers(l1a))
System.out.println(Error: a);
It displays Error: a. Because of this, it happens that none of the
subparts of l1 intersects with l2 :(
Regards,
Chris.
!DSPAM:4007,4790fcb4143341804284693!
--
Justin Deoliveira
The Open Planning Project
http://topp.openplans.org
-
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/
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Re: [Geotools-gt2-users] Splitting LineStrings at their intersection
Hi Chris,
Yes I got the data you sent. My apologies for not being able to dedicate
time to this but I am quite swamped with project work at the moment and
probably wont be able to get to this until the weekend.
-Justin
Chris wrote
Could you confirm that you received the data you needed?
Chris.
On Jan 19, 2008 1:06 AM, Justin Deoliveira [EMAIL PROTECTED] wrote:
Hi Chris,
Sorry, its been a busy week and I have not had time to keep up with your
questions. Its not immediately evident to me what is wrong with your
code. I would have to debug it over on my end. You said your data is a
shapefile with a few thousands rows in it? If there are no licensing or
confidentiality issues is there any chance i can get my hands on it?
that way i could test over here.
If so, please send the location of the shapefile (you can in a private
email if you wish). Also the most recent version of all your code.
-justin
Chris wrote:
Sorry, it is me again but I'm still stuck with the same problem: I
tried the following
Coordinate[] c = new
Coordinate[]{(l1.getStartPoint()).getCoordinate(), p.getCoordinate()};
LineString l1a = new LineString(new CoordinateArraySequence(c), new
GeometryFactory(new PrecisionModel(
PrecisionModel.maximumPreciseValue), 4326));
l1_sub.add(l1a);
if(!l1.covers(l1a))
System.out.println(Error: a);
But this did not improve anything (Still prints Error: a). Hence, in
the following of my routine, I trying to see which sub_part of l1 is
having an intersection with l2, it happens (more than 1000 times for
my shapefile) that I can find any l1 sub_part intersecting l2.
To detect the intersection, I'm using the following code:
int k = 0;
while (k l1_sub.size() !((LineString) l1_sub.get(k)).intersects(l2)) {
++k;
}
if(k = l1_sub.size()) {
System.out.println(error);
}
I hope someone can help me with this, because of this, my graph is
not perfectly connected and this is kinda annoying. This is the last
problem in my project... thanks in advance.
P.S: I forgot to mention in my previous mail that p in the
intersection point between l1 and another linestring l2.
On Jan 15, 2008 2:12 AM, Chris [EMAIL PROTECTED] wrote:
Could you tell me what is wrong with this part of code?
Coordinate[] c = new Coordinate[]{(l1.getStartPoint()).getCoordinate(),
p.getCoordinate()};
LineString l1a = new LineString(new CoordinateArraySequence(c), new
GeometryFactory());
l1_sub.add(l1a);
if(!l1.covers(l1a))
System.out.println(Error: a);
It displays Error: a. Because of this, it happens that none of the
subparts of l1 intersects with l2 :(
Regards,
Chris.
--
Justin Deoliveira
The Open Planning Project
http://topp.openplans.org
!DSPAM:4007,47987ff0190371336712104!
--
Justin Deoliveira
The Open Planning Project
http://topp.openplans.org
-
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/
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