<div dir="ltr">Seems like If you want :<div>for each little square, get the id of big square overlaping.</div><div>If this is simply this, you don't need the "intersection" function,</div><div>but only the "intersects" function :</div>
<div><br></div><div>You could do something like this</div><div><br></div><div>SELECT <a href="http://ss.id">ss.id</a>, <a href="http://bs.id">bs.id</a> , ss.geom</div><div>FROM smal_square_table AS ss, big_square_table AS bs</div>
<div>WHERE ST_Intersects(ss.geom,bs.geom)=TRUE</div><div><br></div><div>Cheers,</div><div>Rémi-C</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/12/12 <span dir="ltr"><<a href="mailto:islanis@infomed.sld.cu" target="_blank">islanis@infomed.sld.cu</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">
Hi,<br>
<br>
Try pg 21 of this: <a href="http://presentations.opengeo.org/2011_FOSS4G/postgis-power.pdf" target="_blank">http://presentations.opengeo.<u></u>org/2011_FOSS4G/postgis-power.<u></u>pdf</a><br>
<br>
That will give you the metacode.<br>
<br></div><div class="im">
Overlays. (he sighs.) Be glad you only have 2 layers... .<br>
<br>
Best,<br>
Steve<br>
</div></blockquote>
Hey steve thanks for the book is really good as a resume, but the only apart that it have to do with my problem is the intersection of 2 shapes<br>
"SELECT<br>
a.*, b.*,<br>
ST_Intersection(a.geom, b.geom)<br>
FROM<br>
a, b<br>
WHERE<br>
ST_Intersects(a.geom, b.geom);"<br>
<br>
but my problem is different, i got as a mention 2 shapes with the same projection and place,<br>
and are the same but one is from one study, and the other is from other stufy, but are the same<br>
place and each one have data, the only things that they got different are the size of the squares,the data they got and the<br>
name of the columns are the same, but the values are different cause the type of the study<br>
,there is one that have the squares more smaller that the other, but i dont want lose any data, i need that in the map it has seen like<br>
the figure "A and B" but in the data each row got the values of A and the values of B<br>
<br>
1-the first shapefile<br>
__________________<br>
| |<br>
| |<br>
| 1 | shp=A<br>
| |<br>
| |<br>
|_________________|<br>
<br>
The one big country, this is a multipolygon shape<br>
<br>
DATA=>dni01 numeric,dni02 numeric,dni03 numeric,<br>
dni04 numeric,dni05 numeric,dni06 numeric,<br>
dni07 numeric,dni08 numeric,dni09 numeric,<br>
dni10 numeric,dni11 numeric,dni12 numeric,<br>
dniann numeric,the_geom geometry<div class="im"><br>
<br>
2-and the second shapefile<br>
__________________<br>
| 2 | 2 |<br>
|________|________|<br>
| 2 | 2 | shp=B<br>
|________|________|<br>
| 2 | 2 |<br>
|________|________|<br>
The same country, but this time in little pieces, the states, this is a multipolygon shape too<br>
<br></div>
DATA=>dni01 numeric,dni02 numeric,dni03 numeric,<br>
dni04 numeric,dni05 numeric,dni06 numeric,<br>
dni07 numeric,dni08 numeric,dni09 numeric,<br>
dni10 numeric,dni11 numeric,dni12 numeric,<br>
dniann numeric,the_geom geometry<div class="im"><br>
<br>
and i want join the 2 shapes in only one shapefile getting something like this<br>
<br>
__________________<br>
| 1,2 | 1,2 |<br>
|________|________|<br>
| 1,2 | 1,2 | shp=A and B<br>
|________|________|<br>
| 1,2 | 1,2 |<br>
|________|________|<br>
<br></div>
DATA=>dni01A numeric,dni02A numeric,dni03A numeric,dni04A numeric,<br>
dni05A numeric,dni06A numeric,dni07A numeric,dni08A numeric,<br>
dni09A numeric,dni10A numeric,dni11A numeric,dni12A numeric,<br>
dniannA numeric,dni01B numeric,dni02B numeric,dni03B numeric,<br>
dni04B numeric,dni05B numeric,dni06B numeric,dni07B numeric,<br>
dni08B numeric,dni09B numeric,dni10B numeric,dni11B numeric,<br>
dni12B numeric,dniannB numeric,the_geom geometry<br>
<br>
i think that this is posible to do with postgis, but i dont know why, am looking in quantumGIS but i lose data cause the big suare overlap the little<br>
ones and i lose data cause there is some places that i get NULL.<br>
<br>
please help<br>
thanks for all<div><div class="h5"><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
<br>
<br>
<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On Mon, Dec 9, 2013 at 11:03 AM, J.Alejandro Martinez Linares <<a href="mailto:islanis@infomed.sld.cu" target="_blank">islanis@infomed.sld.cu</a>> wrote:<br>
<br>
Hi People, i need your help, let say that i have 2 shapefiles<br>
<br>
1-the first shapefile<br>
__________________<br>
| |<br>
| |<br>
| 1 | shp=B<br>
| |<br>
| |<br>
|_________________|<br>
<br>
One big country, this is a multipolygon shape<br>
<br>
2-and the second shapefile<br>
__________________<br>
| 2 | 2 |<br>
|________|________|<br>
| 2 | 2 | shp=B<br>
|________|________|<br>
| 2 | 2 |<br>
|________|________|<br>
The same country, but this time in little pieces, the states, this is a multipolygon shape too<br>
<br>
and i want join the 2 shapes in only one shapefile getting something like this<br>
<br>
__________________<br>
| 1,2 | 1,2 |<br>
|________|________|<br>
| 1,2 | 1,2 | shp=A and B<br>
|________|________|<br>
| 1,2 | 1,2 |<br>
|________|________|<br>
<br>
i think that this is posible, please help me to get somthing like this i need it.<br>
<br>
<br>
<br>
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