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Hi Sean, <br>
<br>
I haven't found the files that you are speaking about to see how
they are. There are several options to sum up population depending
on the origin layers. <br>
<br>
If you have a polygon layer and population is a point or polygon
layer, you would use "In-polygon spatial join", from: <br>
Tools->Geoprocessing->Toolbox, and then Sextante->Tools for
polygon layers->In-polygon spatial join<br>
And here you have an example:
<a class="moz-txt-link-freetext" href="https://blog.gvsig.org/2019/05/20/from-points-to-polygons-how-to-calculate-population-by-block/">https://blog.gvsig.org/2019/05/20/from-points-to-polygons-how-to-calculate-population-by-block/</a>
<br>
<br>
If both layers are polygon layers and the population layer has a
field with population, you can apply a Spatial join or Intersect
geoprocess first to add the field with the region or river basin,
and finally you apply a Dissolve geoprocess on the new layer,
dissolving by that field and applying SUM of population field. <br>
<br>
Best regards, <br>
Mario <br>
<br>
<br>
<div class="moz-cite-prefix">El 14/7/21 a las 21:28, Sean McKenzie
escribió:<br>
</div>
<blockquote type="cite"
cite="mid:OSZP286MB1386E77571FD78785C591EDA91139@OSZP286MB1386.JPNP286.PROD.OUTLOOK.COM">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
Hi,<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
I want to take a file like this, wd_bas30s_po.shp, that comes
from <a href="https://www.hydrosheds.org/"
moz-do-not-send="true">
https://www.hydrosheds.org/</a>, and sum up the population
data from this file, popc_1800AD.asc, which comes from the
HYDE database.<span style="mso-spacerun:yes">
</span>I want to count the population per river basin.<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
Ultimately, I want to use files like popc_1800AD.asc and sum
the data in them by regions I define, which will in general be
river basins, aggregations of river basins, or sub divisions
of river basins.<span style="mso-spacerun:yes">
</span>In places without rivers it will be something else,
like islands.<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
I have not been able to this.<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
Can anyone tell me how, or direct me to a book, video, article
etc. that will tell me how?<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
<o:p> </o:p></p>
<p class="MsoNormal" style="margin:0cm 0cm
8pt;text-align:justify;line-height:107%;font-size:11pt;font-family:等线">
Thanks.<o:p> </o:p></p>
<br>
</div>
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Today's Topics:<br>
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1. Vol.7 no.07 GeoForAll Newsletter (SERGIO
ACOSTAYLARA)<br>
2. Vol.7 no.07 GeoForAll Newsletter (SERGIO
ACOSTAYLARA)<br>
<br>
<br>
----------------------------------------------------------------------<br>
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Message: 1<br>
Date: Wed, 7 Jul 2021 17:34:36 +0000<br>
From: SERGIO ACOSTAYLARA
<a class="moz-txt-link-rfc2396E" href="mailto:sergio.acostaylara@mtop.gub.uy"><sergio.acostaylara@mtop.gub.uy></a><br>
To: <a class="moz-txt-link-rfc2396E" href="mailto:gvsig_internacional@listserv.gva.es">"gvsig_internacional@listserv.gva.es"</a><br>
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Subject: [Gvsig_english] Vol.7 no.07 GeoForAll
Newsletter<br>
Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:1625679277045.9484@mtop.gub.uy"><1625679277045.9484@mtop.gub.uy></a><br>
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<br>
Dear all,<br>
<br>
The July 2021 issue has been uploaded onto GeoForAll
website<br>
(<a class="moz-txt-link-freetext" href="https://www.osgeo.org/initiatives/geo-for-all/">https://www.osgeo.org/initiatives/geo-for-all/</a> and/or<br>
<a
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moz-do-not-send="true">https://www.osgeo.org/initiatives/geo-for-all/geo-newsletters-archive/</a>)
in pdf<br>
format and in Spanish.<br>
I would like to thank all those who helped with their
contributions to<br>
have both editions and ask for new volunteers to join
the Newsletter<br>
by sending their articles, announcements, news, etc.<br>
<br>
For those who would like to send articles, news, etc.,
to be published<br>
in the next issue (August 2021 issue) please have in
mind that the<br>
deadline is July, 27.<br>
Please, if you know about a conference/webinar or you
are going to<br>
organize one, send a reminder much earlier so we can
disseminate it<br>
through our Newsletter.<br>
<br>
<br>
Have a nice reading<br>
Nikos Lambrinos<br>
<br>
--<br>
??????????? ???????????? ????????????<br>
?? ??????????? ??? ?????????????????? ?? ???? ?? ??????
?????<br>
????????????? ??? ? ????? ???? ??????????? ????? ??? ???
???????????<br>
?????????. ??? ????? ????? ?? ????? ?????? ??? ????? ???
??? ????? ?<br>
????????????? ??????????, ??? ???????????? ???
?????????, ???????????,<br>
??????? ? ???????????? ????? ?????? ????? ???
???????????? ???<br>
???????? ????????? ????????????. ?????? ???????????? ??
??????????? ??<br>
?????? ?????? ???? ????????? ??? ?????????, ????? ???
??? ???????? ??<br>
?????????? ?? ?????? ??? ?? ??????? ???.<br>
? ??????????? ???? Internet ??? ????? ??????? ???
???????? ?? ??? ???<br>
????? ?????? ??? ??????????? ?????? ? ????????? ?????
??? ??????????<br>
??? ??? ????? ??? ???????? ? ??? ?????????? ??? ???? ???
??? ?????<br>
??????? ?? ????.<br>
<br>
??? ????????????,<br>
???????????? ???????????? ????????????<br>
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<br>
--------------------------------------------------------------------------------<br>
??. ????? ?????????<br>
????????? ??? ??????????? ??? ??????????<br>
????? ????????? ???????????<br>
?.?.?. 54124 ???????????<br>
???.: 2310 991201 / 991230<br>
Email: <a class="moz-txt-link-abbreviated" href="mailto:labrinos@eled.auth.gr">labrinos@eled.auth.gr</a><br>
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--------------------------------------------------------------------------------<br>
Dr. Nikos Lambrinos<br>
Professor of Geography Teaching<br>
President of the Hellenic digital earth Centre of
Excellence<br>
Faculty of Education<br>
School of Primary Education<br>
Dept. of Science and New Technologies<br>
Aristotle University of Thessaloniki<br>
GR-54124 Thessaloniki, Greece<br>
Tel: +30 2310 991201<br>
Email: <a class="moz-txt-link-abbreviated" href="mailto:labrinos@eled.auth.gr">labrinos@eled.auth.gr</a><br>
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moz-do-not-send="true">http://users.auth.gr/labrinos/</a><br>
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href="http://www.digital-earth.edu.gr/"
moz-do-not-send="true">http://www.digital-earth.edu.gr/</a><br>
<a
href="https://www.auth.gr/en/univUnits"
moz-do-not-send="true">https://www.auth.gr/en/univUnits</a><br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Wed, 7 Jul 2021 17:34:36 +0000<br>
From: SERGIO ACOSTAYLARA
<a class="moz-txt-link-rfc2396E" href="mailto:sergio.acostaylara@mtop.gub.uy"><sergio.acostaylara@mtop.gub.uy></a><br>
To: <a class="moz-txt-link-rfc2396E" href="mailto:gvsig_internacional@listserv.gva.es">"gvsig_internacional@listserv.gva.es"</a><br>
<a class="moz-txt-link-rfc2396E" href="mailto:gvsig_internacional@listserv.gva.es"><gvsig_internacional@listserv.gva.es></a><br>
Subject: [Gvsig_english] Vol.7 no.07 GeoForAll
Newsletter<br>
Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:1625679277045.9484@mtop.gub.uy"><1625679277045.9484@mtop.gub.uy></a><br>
Content-Type: text/plain; charset="windows-1253"<br>
<br>
Dear all,<br>
<br>
The July 2021 issue has been uploaded onto GeoForAll
website<br>
(<a class="moz-txt-link-freetext" href="https://www.osgeo.org/initiatives/geo-for-all/">https://www.osgeo.org/initiatives/geo-for-all/</a> and/or<br>
<a
href="https://www.osgeo.org/initiatives/geo-for-all/geo-newsletters-archive/"
moz-do-not-send="true">https://www.osgeo.org/initiatives/geo-for-all/geo-newsletters-archive/</a>)
in pdf<br>
format and in Spanish.<br>
I would like to thank all those who helped with their
contributions to<br>
have both editions and ask for new volunteers to join
the Newsletter<br>
by sending their articles, announcements, news, etc.<br>
<br>
For those who would like to send articles, news, etc.,
to be published<br>
in the next issue (August 2021 issue) please have in
mind that the<br>
deadline is July, 27.<br>
Please, if you know about a conference/webinar or you
are going to<br>
organize one, send a reminder much earlier so we can
disseminate it<br>
through our Newsletter.<br>
<br>
<br>
Have a nice reading<br>
Nikos Lambrinos<br>
<br>
--<br>
??????????? ???????????? ????????????<br>
?? ??????????? ??? ?????????????????? ?? ???? ?? ??????
?????<br>
????????????? ??? ? ????? ???? ??????????? ????? ??? ???
???????????<br>
?????????. ??? ????? ????? ?? ????? ?????? ??? ????? ???
??? ????? ?<br>
????????????? ??????????, ??? ???????????? ???
?????????, ???????????,<br>
??????? ? ???????????? ????? ?????? ????? ???
???????????? ???<br>
???????? ????????? ????????????. ?????? ???????????? ??
??????????? ??<br>
?????? ?????? ???? ????????? ??? ?????????, ????? ???
??? ???????? ??<br>
?????????? ?? ?????? ??? ?? ??????? ???.<br>
? ??????????? ???? Internet ??? ????? ??????? ???
???????? ?? ??? ???<br>
????? ?????? ??? ??????????? ?????? ? ????????? ?????
??? ??????????<br>
??? ??? ????? ??? ???????? ? ??? ?????????? ??? ???? ???
??? ?????<br>
??????? ?? ????.<br>
<br>
??? ????????????,<br>
???????????? ???????????? ????????????<br>
<br>
Email Disclaimer<br>
The information in this email is confidential and is
intended solely<br>
for the addressee(s). If you have received this
transmission in error,<br>
and you are not an intended recipient, be aware that any
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contents is<br>
prohibited. Furthermore, you are kindly requested to
send us back the<br>
original message to the sender?s address and delete the
message from<br>
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Internet communications are not secure and therefore
AUTH does not<br>
accept legal responsibility for the contents of this
message and for<br>
any damage whatsoever that is caused by viruses being
passed.<br>
<br>
<br>
Thank You,<br>
Aristotle University of Thessaloniki<br>
<br>
--------------------------------------------------------------------------------<br>
??. ????? ?????????<br>
????????? ??? ??????????? ??? ??????????<br>
????? ????????? ???????????<br>
?.?.?. 54124 ???????????<br>
???.: 2310 991201 / 991230<br>
Email: <a class="moz-txt-link-abbreviated" href="mailto:labrinos@eled.auth.gr">labrinos@eled.auth.gr</a><br>
Web Page: <a href="http://users.auth.gr/labrinos/"
moz-do-not-send="true">http://users.auth.gr/labrinos/</a><br>
<a href="http://www.digital-earth.edu.gr/"
moz-do-not-send="true">http://www.digital-earth.edu.gr/</a><br>
<a href="https://www.auth.gr/univUnits"
moz-do-not-send="true">https://www.auth.gr/univUnits</a><br>
<br>
--------------------------------------------------------------------------------<br>
Dr. Nikos Lambrinos<br>
Professor of Geography Teaching<br>
President of the Hellenic digital earth Centre of
Excellence<br>
Faculty of Education<br>
School of Primary Education<br>
Dept. of Science and New Technologies<br>
Aristotle University of Thessaloniki<br>
GR-54124 Thessaloniki, Greece<br>
Tel: +30 2310 991201<br>
Email: <a class="moz-txt-link-abbreviated" href="mailto:labrinos@eled.auth.gr">labrinos@eled.auth.gr</a><br>
Web Page: <a href="http://users.auth.gr/labrinos/"
moz-do-not-send="true">http://users.auth.gr/labrinos/</a><br>
<a
href="http://www.digital-earth.edu.gr/"
moz-do-not-send="true">http://www.digital-earth.edu.gr/</a><br>
<a
href="https://www.auth.gr/en/univUnits"
moz-do-not-send="true">https://www.auth.gr/en/univUnits</a><br>
<br>
<br>
------------------------------<br>
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conservarán mientras exista un interés mutuo para ello.
Los datos
no serán comunicados a terceros, salvo obligación legal.
Le
informamos que puede ejercer los derechos de acceso,
rectificación,
portabilidad y supresión de sus datos y los de
limitación y
oposición a su tratamiento dirigiéndose enviando un
mensaje al
correo electrónico a <a href="mailto:info@gvsig.com">info@gvsig.com</a>.
Si considera que el tratamiento no se ajusta a la
normativa vigente,
podrá presentar una reclamación ante la autoridad de
control en
<a href="http://www.agpd.es/" target="_blank">www.agpd.es</a>.</span></font></font></font></p>
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