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Index › Programming Questions & Help › Syntax Questions › Loading an SVG file
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Loading an SVG file (Read 2127 times)
SmeeZee
Loading an SVG file
Dec 3rd, 2009, 5:49am  
Hi there

I am trying to the load the SVG file found here (http://upload.wikimedia.org/wikipedia/commons/5/5f/USA_Counties_with_FIPS_and_na...
). I have added the file to my instance (sketch Add File) and have the following code:

Code:

import processing.candy.*;
import processing.xml.*;

PShape s;

void setup()
{
    int width = 556;
    int height = 352;
        
    s = loadShape("USA_Counties.svg");  
    noLoop();
}

void draw()
{
   shape(s,10,10,width,height);
}


Processing reports "shape command not handled" with the dump of:

Code:


Ignoring  <metadata> tag.
Ignoring  <sodipodi:namedview> tag.
parsed: M,82.37398,5.202,L,82.62298,5.9,L,82.74798,6.436,L,82.99598,8.907,L,82.97398,9.056,L,82.20798,9.614,L,82.06398,9.655,L,81.16198,9.488,L,80.68398,9.506,L,77.84098,8.735,L,70.64298,6.676,L,67.75798,5.869,L,67.56798,5.851,L,67.54198,4.905,L,66.73898,3.719,L,65.99098,2.052,L,65.84698,1.389,L,65.85198,1.344,L,65.93298,1.217,L,66.16698,1.033,L,66.40998,0.893,L,66.58598,0.794,L,69.49298,1.628,L,72.03498,2.353,L,74.89298,3.214,L,80.08498,4.584,L,82.37398,5.202,M,63.84098,2.026157e
unparsed: -014,L,63.89498,0.014,L,64.29698,0.131,L,64.32298,0.469,L,64.25598,0.492,L,63.80498,0.329,L,63.84098,2.026157e,-014
Exception in thread "Animation Thread" java.lang.RuntimeException: shape command not handled: -014
	at processing.core.PShapeSVG.parsePath(PShapeSVG.java:690)
	at processing.core.PShapeSVG.parseChild(PShapeSVG.java:324)
	at processing.core.PShapeSVG.parseChildren(PShapeSVG.java:264)
	at processing.core.PShapeSVG.<init>(PShapeSVG.java:254)
	at processing.core.PShapeSVG.<init>(PShapeSVG.java:152)
	at processing.core.PShapeSVG.<init>(PShapeSVG.java:144)
	at processing.core.PApplet.loadShape(PApplet.java:3645)
	at first.setup(first.java:33)
	at processing.core.PApplet.handleDraw(PApplet.java:1402)
	at processing.core.PApplet.run(PApplet.java:1327)
	at java.lang.Thread.run(Thread.java:613)


I am rather confused, could you shed some light on this?
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Cedric
Re: Loading an SVG file
Reply #1 - Dec 3rd, 2009, 6:29am  
This svg is 1.9 MB of size. That is really alot. I am pretty sure, there are some lines of code that can not be interpreted by processing as not all svg features are yet supported. Just try to use a much simpler svg, if its working, i guess thats the problem.

seems like every single department, in this map is a new shape+outline+names. So if you only need a map of the us you will find something else.


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SmeeZee
Re: Loading an SVG file
Reply #2 - Dec 3rd, 2009, 7:23am  
Hi there

Yes it is rather large, and yes I need that detail. I want to fill each segment relevant to external data values. Is there any other way processing can handle this file?

thanks
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blindfish
Re: Loading an SVG file
Reply #3 - Dec 3rd, 2009, 10:05am  
I managed to load it Smiley

The problem is in the data; specifically in "Whatcom, WA".  Load up the SVG file in a text editor and search for a coordinate from the unparsed data in the error message - e.g. "63.89498".  You'll see just before that there's: "2.026157e-014" which I'm assuming is what's causing the problem.  If you remove the Whatcom path the file loads with no errors; though I don't think it will look the way you want it...

BTW - if you're running the latest processing you don't need to import Candy - it's part of the core now...
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Where is the what if the what is in why?
 
PhiLho 
Re: Loading an SVG file
Reply #4 - Dec 3rd, 2009, 12:06pm  
Well spotted, blindfish.
The solution is actually to replace the 2.026157e-014 value by 0, as it is close anyway.

It is a bug in Processing's parsing of path: it assumes a minus sign can happen only at the start of a number, it doesn't handle correctly a number like 1E-2.

[EDIT] Reported as Bug 1408.
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« Last Edit: Dec 4th, 2009, 4:26am by PhiLho  »  
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SmeeZee
Re: Loading an SVG file
Reply #5 - Dec 4th, 2009, 1:26am  
Thank you very much Blindfish! Well spotted!

It doesn't quite look how I expected, but it has a certain old fashioned feel about it which I quite like.

Thanks again. Smiley
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