# [postgis-users] postgis newbie AsSVG question

Sean M. Montague smontague at ATSDenver.com
Tue Feb 15 08:32:42 PST 2005

```Thanks.  I was playing around with it and realized that relative will
draw states from my map of the US all over the place, versus drawing
them in their proper location.

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of
TECHER Jean David
Sent: Tuesday, February 15, 2005 1:33 AM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] postgis newbie AsSVG question

Hi Sean,

I think when U use AsSVG function U have to know that for the 2nd
argument

m -- Relative "Move To" command. Starts a new subpath at the given x,y
coordinate. If a moveto is followed by multiple pairs of coordinates,
the
subsequent pairs are treated as implicit "Line To" commands.

M --  Absolute "Move To" command. Starts a new subpath at the given x,y
coordinate. If a moveto is followed by multiple pairs of coordinates,
the
subsequent pairs are treated as implicit "Line To" commands.

l -- Relative "Line To" command. Draws a line from the current point to
the
given x,y coordinate, which becomes the new current point. A number of
coordinate pairs can be specified to draw a polyline.

L -- Absolute "Line To" command. Draws a line from the current point to
the
given x,y coordinate, which becomes the new current point. A number of
coordinate pairs can be specified to draw a polyline.

h -- Relative "Horizontal Line To" command. Draws a line from the
current
point (cpx, cpy) to (x, cpy). Multiple values can be provided.HAbsolute
"Horizontal Line To" command. Draws a line from the current point (cpx,
cpy)
to (x, cpy).

v -- Relative "Vertical Line To" command. Draws a line from the current
point (cpx, cpy) to (cpx, y). Multiple values can be provided.VAbsolute
"Vertical Line To" command. Draws a line from the current point (cpx,
cpy)
to (cpx, y).

z -- Relative "Closepath" command. Causes an automatic straight line to
be
drawn from the current point to the initial point of the current
subpath.

Z --  Absolute "Closepath" command. Causes an automatic straight line to
be
drawn from the current point to the initial point of the current
subpath.
----------------------------------------------------------------
TECHER Jean David
Responsable Informatique 01MAP
e-mail: davidtecher at yahoo.fr
Bureau: 04 67 45 60 27
Portable: 06 85 37 36 75
site perso : http://techer.pascal.free.fr/postgis/
K-S:"The greatest trick the devil pulled off was convincing people he
didn't
exist"
------------------------------------------------------------
----- Original Message -----
From: "Sean M. Montague" <smontague at ATSDenver.com>
To: "PostGIS Users Discussion" <postgis-users at postgis.refractions.net>
Sent: Monday, February 14, 2005 8:48 PM
Subject: RE: [postgis-users] postgis newbie AsSVG question

I've figured it, but could some tell me what the 2nd argument means by
relative or absolute moves?  Also, is there a way to have it not output
the points using exponents?  Thanks.

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Sean
M. Montague
Sent: Monday, February 14, 2005 12:33 PM
To: PostGIS Users Discussion
Subject: [postgis-users] postgis newbie AsSVG question

I'm trying to get up to speed quickly with postgis and php, I'm moving
away from MySQL, and I have an AsSVG question.  Below is a select
statement I modified, and works, that returns a list of states.  I'm
trying to export it AsSVG, but can't get it to work.  I've inserted it
in several places with no luck.  Any insight would be most appreciated.

select the_geom from usa where the_geom &&
GeomFromText('LINESTRING(-1862016 717184, -956486 935033)', 42102) and
crosses(the_geom, GeomFromText('LINESTRING(-1862016 717184, -956486
935033)', 42102))

Sean
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```