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<?xml version="1.0" encoding="ISO-8859-1"?>
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<refentry id="fn_st_transform_by_custom_projection">
<refmeta>
<refentrytitle>st_transform_by_custom_projection</refentrytitle>
<refmiscinfo>geo</refmiscinfo>
</refmeta>
<refnamediv>
<refname>st_transform_by_custom_projection</refname>
<refpurpose>Performs a custom projection of shape, using the specified algorithm and algorithm-specific arguments.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_st_transform_by_custom_projection">
<funcprototype id="fproto_st_transform_by_custom_projection">
<funcdef><function>st_transform_by_custom_projection</function></funcdef>
<paramdef>in <parameter>shape</parameter> any</paramdef>
<paramdef>in <parameter>algorithm_id</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_st_transform_by_custom_projection">
<title>Description</title>
<para>Performs a custom projection of shape, using the specified algorithm and algorithm-specific arguments.
</para>
</refsect1>
<refsect1 id="params_st_transform_by_custom_projection">
<title>Parameters</title>
<refsect2><title>shape</title><para>Geometry.</para></refsect2>
<refsect2><title>algorithm_id</title><para>Algorithm -- Current version supports only one algorithm,
st_transform_by_custom_projection (shape, 'OLAEAPS', long_of_center, lat_of_center) for Oblique Lampert
Azimuthal Equal-Area Projection System with the specified center point.</para></refsect2>
</refsect1>
<refsect1 id="ret_st_transform_by_custom_projection"><title>Return Types</title>
<para>Returns varchar.</para>
</refsect1>
<refsect1 id="examples_st_transform_by_custom_projection">
<title>Examples</title>
<example id="ex_st_transform_by_custom_projection"><title>Simple Use</title>
<screen><![CDATA[
select st_transform_by_custom_projection (
st_ewkt_read ('POLYGON((1 3,2 4,1 5,0 4,1 3),
(1 3.5,1.5 4,1 4.5,0.5 4,1 3.5))'),
'OLAEAPS', 20, 45)
unnamed
VARCHAR NOT NULL
_______________________________________________________________________________
SRID=0;POLYGON((-0.352161 -0.627582,
-0.332392 -0.617674,
-0.348956 -0.599730,
-0.368752 -0.609534,
-0.352161 -0.627582),
(-0.351386 -0.620657,
-0.341498 -0.615717,
-0.349784 -0.606732,
-0.359678 -0.611647,
-0.351386 -0.620657))
]]>
</screen>
</example>
</refsect1>
<refsect1 id="seealso_st_transform_by_custom_projection">
<title>See Also</title>
<para><link linkend="fn_ST_Translate"><function>ST_Translate()</function></link></para>
<para><link linkend="fn_ST_TransScale"><function>ST_TransScale()</function></link></para>
<para><link linkend="fn_st_x"><function>ST_X()</function></link></para>
<para><link linkend="fn_st_y"><function>ST_Y()</function></link></para>
<para><link linkend="fn_ST_Z"><function>ST_Z()</function></link></para>
<para><link linkend="fn_ST_M"><function>ST_M()</function></link></para>
<para><link linkend="fn_ST_XMin"><function>ST_XMin()</function></link></para>
<para><link linkend="fn_ST_XMax"><function>ST_XMax()</function></link></para>
<para><link linkend="fn_ST_YMin"><function>ST_YMin()</function></link></para>
<para><link linkend="fn_ST_YMax"><function>ST_YMax()</function></link></para>
<para><link linkend="fn_ST_ZMin"><function>ST_ZMin()</function></link></para>
<para><link linkend="fn_ST_ZMax"><function>ST_ZMax()</function></link></para>
<para><link linkend="fn_ST_MMin"><function>ST_MMin()</function></link></para>
<para><link linkend="fn_ST_MMax"><function>ST_MMax()</function></link></para>
</refsect1>
</refentry>
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