[mapserver-users] MapServer Symbol Conversion from Polyline Points

[Donald Kerr]

Just to add a wee bit to this. I have a number of symbols that I would like
to recreate in MapServer. I have an image of what they should look like and
I have the arrays of polyline points. What I don't really know is the
limitations of the MapServer vector points i.e. the maximum number of points
that can be used and the highest positive/negative numbers that can be used.
I believe that "-99" works as 'pen up' but does that mean that -98 and 98
are the maximum? Also, do the point values have to be integer values? If
not, how many numbers after the point e.g. 1.12345 etc.

If I take the polyline points like the following then the server throws a
CGI wobbly and needs restarting:

SYMBOL
	NAME 'boulderGeometry'
	TYPE VECTOR
	FILLED FALSE
	POINTS 
		-0.154 0.236
		-0.111 0.365
		-0.116 0.501
		-0.165 0.616
		-0.170 0.627
		-0.264 0.724
		-0.490 0.826
		-0.682 0.889
		-0.885 0.900
		-1.083 0.858
		-1.264 0.767
		-1.415 0.631
		-1.521 0.466
		-1.558 0.199
		-1.538 -0.071
		-1.462 -0.329
		-1.333 -0.566
 		-1.156 -0.771
		-99 -99
		1.755 -0.819
		1.534 -0.804
		0.832 -0.857
		0.129 -0.824
		-0.450 -0.769
		-1.032 -0.767
		-1.612 -0.819
		-99 -99
		1.640 -0.804
		1.620 -0.589
		1.392 -0.388
		1.122 -0.248
		-99 -99
		0.311 -0.526
		0.520 -0.573
		0.732 -0.554
		0.930 -0.472
		1.093 -0.335
		1.097 -0.329
		1.101 -0.323
		1.105 -0.317
		1.108 -0.311
		1.111 -0.304
		1.113 -0.298
		1.115 -0.291
		1.117 -0.284
		1.118 -0.277
		1.118 -0.270
		1.119 -0.263
		1.118 -0.256
		1.118 -0.249
		1.117 -0.242
		1.115 -0.235
		1.113 -0.229
		1.111 -0.222
		1.108 -0.216
		1.105 -0.209
		1.101 -0.203
		1.097 -0.198
		1.093 -0.192
		1.088 -0.187
		1.083 -0.182
		1.078 -0.177
		1.073 -0.173
		1.067 -0.169
		1.061 -0.165
		1.054 -0.162
		0.637 0.198
		0.393 0.388
		0.118 0.530
		-0.165 0.616
		-0.178,0.619
	END # POINTS
END # SYMBOL


If I take just part of the above then it still doesn't work:

SYMBOL
	NAME 'boulderGeometry'
	TYPE VECTOR
	FILLED FALSE
	POINTS 
		-0.154 0.236
		-0.111 0.365
		-0.116 0.501
		-0.165 0.616
		-0.170 0.627
	END # POINTS
END # SYMBOL

Any help most greatly appreciated.

Regards,

Donald


-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Donald Kerr
Sent: 28 December 2008 21:39
To: mapserver-users at lists.osgeo.org
Subject: [mapserver-users] MapServer Symbol Conversion from Polyline Points


I've been struggling with this problem all day and cannot make any progress.
I hope that someone can help.

I want to convert a polyline points array into a MapServer Symbol but keep
getting errors.

Here's the polyline array:

<polyline points='-0.154,0.236 -0.111,0.365 -0.116,0.501 -
0.165,0.616 -0.170,0.627 -0.264,0.724 -0.490,0.826 -0.682,0.889
-0.885,0.900 -1.083,0.858 -1.264,0.767 -1.415,0.631 -1.521,0.466
-1.558,0.199 -1.538,-0.071 -1.462,-0.329 -1.333,-0.566 -1.156,-
0.771' />
<polyline points='1.755,-0.819 1.534,-0.804 0.832,-0.857 0.129,-
0.824 -0.450,-0.769 -1.032,-0.767 -1.612,-0.819' />
<polyline points='1.640,-0.804 1.620,-0.589 1.392,-0.388 1.122,-
0.248' />
<polyline points='0.311,-0.526 0.520,-0.573 0.732,-0.554 0.930,-
0.472 1.093,-0.335 1.097,-0.329 1.101,-0.323 1.105,-0.317
1.108,-0.311 1.111,-0.304 1.113,-0.298 1.115,-0.291 1.117,-0.284
1.118,-0.277 1.118,-0.270 1.119,-0.263 1.118,-0.256 1.118,-0.249
1.117,-0.242 1.115,-0.235 1.113,-0.229 1.111,-0.222 1.108,-0.216
1.105,-0.209 1.101,-0.203 1.097,-0.198 1.093,-0.192 1.088,-0.187
1.083,-0.182 1.078,-0.177 1.073,-0.173 1.067,-0.169 1.061,-0.165
1.054,-0.162 0.637,0.198 0.393,0.388 0.118,0.530 -0.165,0.616 -
0.178,0.619' />

And here's a depiction of the symbol I need to create:

http://www.dkerr.co.uk/boulderGeography.gif

Many thanks.

Regards,

Donald

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