select points of polygons

<div class="Section1"><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Times New
Roman","serif"">Hithere,</span><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Times New
Roman","serif""> </span><pclass="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Times New
Roman","serif""> </span><pclass="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Times New
Roman","serif"">Ihave polygons with 5 points (left, center, right, top, bottom)</span><p class="MsoNormal"><span
lang="EN-US"style="font-size:11.0pt;font-family:"Times New Roman","serif""> </span><p class="MsoNormal"><span
lang="EN-US"style="font-size:11.0pt;font-family:"Times New Roman","serif"">Now I would like to select an individual
pointout of the polygon. Are there any functions to provide this in an readable manner other than:</span><p
class="MsoNormal"><spanlang="EN-US" style="font-size:11.0pt;font-family:"Times New Roman","serif""> </span><p
class="MsoNormal"><spanlang="EN-US" style="font-size:11.0pt;font-family:"Times New Roman","serif"">e.g. SELECT
replace(split_part(p::text,',(',1),'((','(')::pointas point FROM ( </span><p class="MsoNormal"><span lang="EN-US"
style="font-size:11.0pt;font-family:"TimesNew Roman","serif"">SELECT
'((0.001329116037,0.007391900417),(0.001371765621,0.1608393682),(0.1502391498,0.00733744679),(0.001500387404,-0.1468751078),(-0.1472653422,0.007425591447))'::polygon
asp) as poly</span><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Times New
Roman","serif""> </span><pclass="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span
lang="EN-US"style="font-size:11.0pt;font-family:Wingdings"><span style="mso-list:Ignore">è<span style="font:7.0pt
"TimesNew Roman""> </span></span></span><span lang="EN-US" style="font-size:11.0pt;font-family:"Times New
Roman","serif"">(0.001329116037,0.007391900417)</span><pclass="MsoNormal"><span lang="EN-US"
style="font-size:11.0pt;font-family:"TimesNew Roman","serif""> </span><p class="MsoNormal"><span lang="EN-US"
style="font-size:11.0pt;font-family:"TimesNew Roman","serif""> </span><p class="MsoNormal"><span lang="EN-US"
style="font-size:11.0pt;font-family:"TimesNew Roman","serif"">Thanks</span><p class="MsoNormal"><span lang="EN-US"
style="font-size:11.0pt;font-family:"TimesNew Roman","serif"">Andreas</span><p class="MsoNormal"><span lang="EN-US"
style="font-size:11.0pt;font-family:"TimesNew Roman","serif""> </span><p class="MsoNormal"><span lang="EN-US"
style="font-size:11.0pt;font-family:"TimesNew Roman","serif""> </span><p class="MsoNormal"><span
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