From e447d9b5e37fbf54370b58380c7c5dbd6f98196b Mon Sep 17 00:00:00 2001 From: Mireille Lecoeuvre Date: Wed, 5 Feb 2014 10:42:50 +0100 Subject: [PATCH] Add description for ST_StartPoint --- docs/dev/ST_EndPoint.md | 1 + docs/dev/ST_StartPoint.md | 15 +- docs/dev/ST_StartPoint.png | Bin 0 -> 18108 bytes docs/dev/ST_StartPoint.svg | 354 +++++++++++++++++++++++++++++++++++++ 4 files changed, 366 insertions(+), 4 deletions(-) create mode 100644 docs/dev/ST_StartPoint.png create mode 100644 docs/dev/ST_StartPoint.svg diff --git a/docs/dev/ST_EndPoint.md b/docs/dev/ST_EndPoint.md index 93c57337f8..b290bd3301 100644 --- a/docs/dev/ST_EndPoint.md +++ b/docs/dev/ST_EndPoint.md @@ -38,4 +38,5 @@ SELECT ST_EndPoint('MULTILINESTRING((1 1, 3 2, 3 1), ##### See also +* [`ST_StartPoint`](../ST_StartPoint) * Source code diff --git a/docs/dev/ST_StartPoint.md b/docs/dev/ST_StartPoint.md index 02ca7e8b69..87cf7020d3 100644 --- a/docs/dev/ST_StartPoint.md +++ b/docs/dev/ST_StartPoint.md @@ -2,28 +2,35 @@ layout: docs title: ST_StartPoint category: h2spatial/properties -description: +description: Return the first point of a LINESTRING prev_section: ST_SRID next_section: ST_X permalink: /docs/dev/ST_StartPoint/ --- -### Signatures +### Signature {% highlight mysql %} +POINT ST_StartPoint(GEOMETRY geom); {% endhighlight %} ### Description - +Returns the first `POINT` of a `LINESTRING` as a `POINT`. +If the input parameter is not a `LINESTRING` this function returns `null`. {% include sfs-1-2-1.html %} -### Examples +### Example {% highlight mysql %} +SELECT ST_StartPoint('LINESTRING(1 2, 5 3, 2 6)'); +-- Answer: POINT(1 2) {% endhighlight %} + + ##### See also +* [`ST_EndPoint`](../ST_EndPoint) * Source code diff --git a/docs/dev/ST_StartPoint.png b/docs/dev/ST_StartPoint.png new file mode 100644 index 0000000000000000000000000000000000000000..5359c8a61a9a63b5676846b02b3ed8c312a5d6d0 GIT binary patch literal 18108 zcmbV!1yoh|B`6>wDAH0&O1CsfOE*Z1fOL1g zwSWKrz2n{Y-hJbZ=NO6}j_kd^?^|olHRoI>NKyU~!DWieC=`l7`mvM}3WcEqzn|mc zz$@u10i*Ecg1v;aGA{h`z%>ele_wj}Slu3lx*mu8#*lXO`vfoEaCo5R@XW@f2n7m7hmw}Muk7-9b;4C#d2aIJ#?;C&R|9Jn8^c@a zUxQja9a=m^Uzp2YEDe78S@G1ww%=MqU9f0p{^KxHWv+R7#N)S@aH<{$N-#73thxNR zuCAkwt)t5OB~f9UkbM`{iKsVr(Z-I;LD$UZbyvc6i;^@<30(SL`7tyo3EW-5>s7e) zQoQ&&{={Ey;BZRd_Tu}I)BBsfsShTW;A@zEfJ+~1>wbh&>9lG$US^X>y1Se4^s7Uh zfEDXvm%HcDVtTIF`AHGhZpo9>Zywv7g6j^>mbY);{t`gz^}Vz*?-4G&yWZ{&=G(82 zLVuce#$J2uxjH{@QssHPN2~3bxICPP_wYT{y$&`^>eozrTNcq9BA) z(0ZdOnB2x`e;1eDhzKn@uyHUOx;(PtZu3kpW0UCqr zA}%kj;D0|*Xf82sCnHDsbjAr*?)>p2mS`Qaw6j~C37{PkI6eB^6dX^e6EEN5wLjrp z9p|;4l~=<$ZC5^&@NV(PYdkxYkH7x~b%n``^!}Ee%=O2uH$(aGCflPporPRf^K{Tj zDJlL6o~IqW-5Kc$iMdwm{M5aR4lAEOQ_-Wu_4SjJ3JX8>hwn?`(rXq6qR=L<=S3pkD4SJ=cHw^h46({?DI357h2R z;(qvHQZH=#yV1nG%G}(1pI{R1DZyi_?Pq$TS4A_~>|NI_qd506vC|#We;!4zXqsBg zt4fECSS=&Z-p)?Ss^pSJf+A^;?F%I$$z)fqJY8B}w<&JAUaY|`%*2%1iPJFG9+mq1`E%sfxVzG_ z!b5KGrj6Q8Mv^NPizLs_&Kjy!I$6c!czG!+f9f#eDN#4%jq60-eWgCF{`l|LPyyjC z_r*S@+q+X%@ruV=?VNZQFz<&dWIUBm6rEU`xsV+}@Bdh@e>$Ge{9|NOMOi~kLc-+t zmP(7kZze1QX|gd&yFc(amB+RgTAG^L;?7Re)Y!;|eiBPa<(qF*eE&Xhe0)6oR5xqT z!rH`yS?uOb$&JMGlk`phSaG_1%ZZATo=7oaG+J9tON%XEV{Fp5R3qo*@t&2Jg#|0} zW8M`WQr~(QN;9$YQc^ojgi1eyyFO>WM% z2;xn4i=B_7MMZ14ucFat0$T5rf=+m^fq{Y0wTyq3s&l^n7{U?Ws##{uf86hNdbIn% zpkM@3Kv`S6v&LajDV+i@Gc!{uvcFc*6@aacVu>wCpYqzm|(*maTN#W#zuFs;1U@ z=gys39yH-)Y5TAJi)t}3F~w(V#VowM&ocTK14rKrx6jwV5QtNU*s|EWbh?X>g8;6 zNS96R>7Mw~vh8g1a~3A1iNd*VGmDdhO+QYZs*w@1g9Wj3^_|{Fv=LU5Rin2V7=Adz zS-@VeIks+kMC`p+t?up*NLP@!t4;fNEfMd>&Nc5Iz(P+NovWlR42;|kZ z^mg|uZf?T^ghkfC~b+MC;1{&(0F6-6%tdJbpXP!YAbKJg7Z-Uj<**WLD$MZtS$kddypMV{X zs@+{GgC!%zPC0FD>a3(BpJ-9H`}Z+wb93KEuYND8ph8l+Rb)A`=S6mNKgS@QRLPMG z*3y=1O=fb;K+bJKFojmJ*;C{8u@>69FU6lim7?J@3)AmQk?yqCbeL@>xDV;-0!nWv zTb<&yL~pi?>&ggsxkk?X(ZRv>M3>(|CaO!<$jG+3KHs~Eg^K1jd{~m6p00lDszxUF zqeqY0-v$S}a&U0W=jZ2}Y&$M=QFjHAvQVKY$RcU^%oK~}cxQkAW>i;K$IMjL5VM&S zk?U{SaYG+Z*ZW;Y`EVOH|AllJ8$WWgS~evG1^k-rU8*d|UY_k|v$@)pR2Zm-@2)=; 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