html/image_src/st_concavehull03.wkt

Style2;POLYGON((20 40,91.5 177.75,93.25 181,95.75 184.25,99 186.75,102.25 188.5,106 189.5,110 190,114 189.5,117.75 188.5,121 186.75,175 150,125 100,20 40))
Style1;POLYGON((175 150,125 100,50 60,20 40,175 150))
Style1;POLYGON((130 170,129.5 166,128.5 162.25,126.75 159,124.25 155.75,121 153.25,117.75 151.5,114 150.5,110 150,106 150.5,102.25 151.5,99 153.25,95.75 155.75,93.25 159,91.5 162.25,90.5 166,90 170,90.5 174,91.5 177.75,93.25 181,95.75 184.25,99 186.75,102.25 188.5,106 189.5,110 190,114 189.5,117.75 188.5,121 186.75,124.25 184.25,126.75 181,128.5 177.75,129.5 174,130 170))