subject:"\[Qgis\-user\] Eliminate GAPS SRTM 30 metros"

[Qgis-user] Eliminate GAPS SRTM 30 metros

2016-01-27 Thread Eddison Araya

[image: Imágenes integradas 1]

Hola, how eliminate gaps in SRTM 30 meters?, in QGIS see no data areas
(gaps). Thank you
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

2016-01-27 Thread Carlos Cerdán

Hi Eddison:

Try r.fillnulls from Processing or directly in GRASS.

So, we have 30 m SRTMS in http://www2.jpl.nasa.gov/srtm/ . It'll be
interesting to compare with ASTER GDEM

Cheers


2016-01-27 13:25 GMT-05:00 Eddison Araya :

>
>
> Hola, how eliminate gaps in SRTM 30 meters?, in QGIS see no data areas
> (gaps). Thank you
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

2016-01-27 Thread Nicolas Cadieux

Hi 
Srtm have many versions with two pixel sizes.  30 m and 90m (at the 
equator). Version has gaps, version two has gap filling for water and small 
hole and version 3 has gap replacement in larger areas.  Gaps are caused 
by radar shadows.  Big gaps are filled using secondary dems.  The are 
all downloadable for free. The latest version in srtmGL1 of the 30m 
pixels.  NASA is currently working on a new version called NASA 
dems.  If the are existent for your region, use those. 
Nicolas Cadieux M.Sc. 
Les Entreprises Archéotec inc.  
8548, rue Saint-Denis Montréal H2P 2H2 
Téléphone: 514.381.5112  Fax: 514.381.4995 
www.archeotec.ca 
On Jan 27, 2016 1:14 PM, "Eddison [via OSGeo.org]" 
 wrote: 

Hola, how eliminate gaps in SRTM 30 meters?, in QGIS see no data areas 
(gaps). Thank you 
___
Qgis-user mailing list
[hidden email] 
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: 
http://lists.osgeo.org/mailman/listinfo/qgis-user 








If you reply to this email, your message will be added to the 
discussion below: 

http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp5247652.html
 


To start a new topic under Quantum GIS - User, email 
ml-node+s1560n4125267h38@n6.nabble.com 
To unsubscribe from Quantum GIS - User, click here . 
NAML 




--
View this message in context: 
http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp5247652p5247673.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

2016-01-27 Thread Nicolas Cadieux

Hi, 
Aster gdem are not as good with about 7 m error. They are clearly canopy level 
models.  They cover up to 83d and srtm are south and north of 60d 
only.  They are more detailed. 
Nicolas Cadieux M.Sc. 
Les Entreprises Archéotec inc.  
8548, rue Saint-Denis Montréal H2P 2H2 
Téléphone: 514.381.5112  Fax: 514.381.4995 
www.archeotec.ca 
On Jan 27, 2016 2:38 PM, "Carlos Cerdán [via OSGeo.org]" 
 wrote: Hi Eddison: Try 
r.fillnulls from Processing or directly in GRASS. So, we have 30 m SRTMS in 
http://www2.jpl.nasa.gov/srtm/  . It'll be interesting to compare with 
ASTER GDEM Cheers 2016-01-27 13:25 GMT-05:00 Eddison Araya < [hidden email] 
>:  Hola, how eliminate gaps in SRTM 30 meters?, 
in QGIS see no data areas (gaps). Thank you 
___ 
Qgis-user mailing list 
[hidden email] 
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user 
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user 
___
Qgis-user mailing list
[hidden email] 
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: 
http://lists.osgeo.org/mailman/listinfo/qgis-user 








If you reply to this email, your message will be added to the 
discussion below: 

http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp5247652p5247658.html
 


To start a new topic under Quantum GIS - User, email 
ml-node+s1560n4125267h38@n6.nabble.com 
To unsubscribe from Quantum GIS - User, click here . 
NAML 




--
View this message in context: 
http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp5247652p5247675.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

2016-01-28 Thread Thomas Götzelt

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512

Hi,

ALOS World 3D - 30m (AW3D30) data may be also considered an
alternative (http://www.eorc.jaxa.jp/ALOS/en/aw3d30/), for the time
being already available for substantial parts of Southern Asia and
South America. Informations on how resolution and error margins of the
dataset compare to ASTERDEM or SRTM30 will be appreciated.

Cheers

Thomas

Am 27.01.16 um 21:35 schrieb Nicolas Cadieux:
> Hi, Aster gdem are not as good with about 7 m error. They are
> clearly canopy level models.  They cover up to 83d and srtm
> are south and north of 60d only.  They are more detailed. 
> Nicolas Cadieux M.Sc. Les Entreprises Archéotec inc.  
> 8548, rue Saint-Denis Montréal H2P 2H2 
> Téléphone: 514.381.5112  Fax: 514.381.4995 
> www.archeotec.ca On Jan 27, 2016 2:38 PM, "Carlos Cerdán [via
> OSGeo.org]" 
> wrote: Hi Eddison: Try r.fillnulls from Processing or directly in
> GRASS. So, we have 30 m SRTMS in http://www2.jpl.nasa.gov/srtm/  .
> It'll be interesting to compare with ASTER GDEM Cheers
> 2016-01-27 13:25 GMT-05:00 Eddison Araya < [hidden email] >:
>  Hola, how eliminate gaps in SRTM
> 30 meters?, in QGIS see no data areas (gaps). Thank you 
> ___ Qgis-user mailing
> list [hidden email] List info:
> http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> http://lists.osgeo.org/mailman/listinfo/qgis-user 
> ___ Qgis-user mailing
> list [hidden email] List info:
> http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> http://lists.osgeo.org/mailman/listinfo/qgis-user
> 
>If you reply to this email, your message will be added to
> the discussion below: 
> http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp52
47652p5247658.html
>To start a new topic under Quantum GIS - User, email
> ml-node+s1560n4125267h38@n6.nabble.com To unsubscribe from
> Quantum GIS - User, click here . NAML 
> 
> 
> 
> -- View this message in context:
> http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp52
47652p5247674.html
>
> 
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
> 
> 
> 
> ___ Qgis-user mailing
> list Qgis-user@lists.osgeo.org List info:
> http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> http://lists.osgeo.org/mailman/listinfo/qgis-user
> 

-BEGIN PGP SIGNATURE-
Version: GnuPG/MacGPG2 v2
Comment: GPGTools - https://gpgtools.org

iQEcBAEBCgAGBQJWqclqAAoJEBQdD854XvN/4rAH/3kJMUSTlrpkMUfIxfnWUigw
oX4ZXnsk9GIUTPgi/gx9WjijrF0w/bGT+83SgoOoSpcQD0875ABIDGH18oIiVCK+
DXVVn7OO0RqrLWjlU+tf2tQCAAxrC6kjlV2au4HaRplVLGjHyBWRchXR9xY2zPcc
dniqq9HGMoYoS7AatX8cQgp8PtTsmvaZaTM4CdCpk4xXaGbZYA8jK2AgjTxNsviq
F/JpfdokwoDmO7iCuzcAFdYxfFHJsdR1xMArfG3WblE1eaNiRms3kKO30mHyowSR
DBz2lPS3sh5D389gcvvKmxYMy7TDk9NMYTzmYUqJ+yxCgxJdFy6FWe6mZ5+6cF0=
=gnTR
-END PGP SIGNATURE-
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

2016-01-28 Thread Nicolas Cadieux

Hi, 
Thank for that data link. I did not know about it.  I am currently doing a 
PhD on various publicly available  DEMs in Canada.  My research 
focuses in  Canada because SRTMs are more precise in the north and south 
(tighter orbit, more data, leaf off).  All this is better for the SRTM 
radar.   I should have more results in about one month and I will 
submit my results for publication.  Hopefully, I will also have the latest 
NASA DEM is my study as they should be publish in June. 
So far, SRTM 30 and 90m  have about haft the error of aster gdem2.  
There is not much loss with the 90 m srtm but the 90 m pixel does suffer in 
mountainous regions. Most of the error from the ASTER data is cause clearly by 
the tree cover.  The SRTM radar has a good vegetation penetration in 
Canada (leaf off).  Aster is made from near infra red images and therefore 
has no canopy penetration. But radar is generally smother partly because 
smoothing is part of the data noise reduction in radar images.  ASTER has 
a sharper image resolution even if the pixel size is the same size but this 
comes at the expense of extra noise. 
I will be happy to communicate more result as I get them. 
Nicolas Cadieux M.Sc. 
Les Entreprises Archéotec inc.  
8548, rue Saint-Denis Montréal H2P 2H2 
Téléphone: 514.381.5112  Fax: 514.381.4995 
www.archeotec.ca 
On Jan 28, 2016 02:49, "Thomas Götzelt-2 [via OSGeo.org]   " 
 wrote: 

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512
Hi,
ALOS World 3D - 30m (AW3D30) data may be also considered an
alternative ( http://www.eorc.jaxa.jp/ALOS/en/aw3d30/ ), for the time
being already available for substantial parts of Southern Asia and
South America. Informations on how resolution and error margins of the
dataset compare to ASTERDEM or SRTM30 will be appreciated.
Cheers
Thomas
Am 27.01.16 um 21:35 schrieb Nicolas Cadieux:
> Hi, Aster gdem are not as good with about 7 m error. They are
> clearly canopy level models.  They cover up to 83d and srtm
> are south and north of 60d only.  They are more detailed. 
> Nicolas Cadieux M.Sc. Les Entreprises Archéotec inc.  
> 8548, rue Saint-Denis Montréal H2P 2H2 
> Téléphone: 514.381.5112  Fax: 
514.381.4995 
> www.archeotec.ca On Jan 27, 2016 2:38 PM, "Carlos Cerdán [via
> OSGeo.org] " < [hidden email] >
> wrote: Hi Eddison: Try r.fillnulls from Processing or directly in
> GRASS. So, we have 30 m SRTMS in http://www2.jpl.nasa.gov/srtm/   .
> It'll be interesting to compare with ASTER GDEM Cheers
> 2016-01-27 13:25 GMT-05:00 Eddison Araya < [hidden email] >:
> <blockquote style="border-left:2px solid 
#cc;padding:0
> 1em" style="margin:0 0 0 0.8ex;border-left:1px #ccc
> solid;padding-left:1ex"> Hola, how eliminate gaps in SRTM
> 30 meters?, in QGIS see no data areas (gaps). Thank you 
> ___ Qgis-user mailing
> list [hidden email] List info:
> http://lists.osgeo.org/mailman/listinfo/qgis-user  Unsubscribe:
> http://lists.osgeo.org/mailman/listinfo/qgis-user  
> ___ Qgis-user mailing
> list [hidden email] List info:
> http://lists.osgeo.org/mailman/listinfo/qgis-user  Unsubscribe:
> http://lists.osgeo.org/mailman/listinfo/qgis-user > 
>        If you reply to this email, your message will be added to
> the discussion below: 
> http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp52 
47652p5247658.html
>    To start a new topic under Quantum GIS - User, email
> ml-node+s1560n4125267h38@n6.nabble.com To unsubscribe from
> Quantum GIS - User, click here . NAML 
> 
> 
> 
> -- View this message in context:
> http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp52 
47652p5247674.html
>
> 
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
> 
> 
> 
> ___ Qgis-user mailing
> list [hidden email]  List info:
> http://lists.osgeo.org/mailman/listinfo/qgis-user  Unsubscribe:
> http://lists.osgeo.org/mailman/listinfo/qgis-user > 
-BEGIN PGP SIGNATURE-
Version: GnuPG/MacGPG2 v2
Comment: GPGTools - https://gpgtools.org 
iQEcBAEBCgAGBQJWqclqAAoJEBQdD854XvN/4rAH/3kJMUSTlrpkMUfIxfnWUigw
oX4ZXnsk9GIUTPgi/gx9WjijrF0w/bGT+83SgoOoSpcQD0875ABIDGH18oIiVCK+
DXVVn7OO0RqrLWjlU+tf2tQCAAxrC6kjlV2au4HaRplVLGjHyBWRchXR9xY2zPcc
dniqq9HGMoYoS7AatX8cQgp8PtTsmvaZaTM4CdCpk4xXaGbZYA8jK2AgjTxNsviq
F/JpfdokwoDmO7iCuzcAFdYxfFHJsdR1xMArfG3WblE1eaNiRms3kKO30mHyowSR
DBz2lPS3sh5D389gcvvKmxYMy7TDk9NMYTzmYUqJ+yxCgxJdFy6FWe6mZ5+6cF0=
=gnTR
-END PGP SIGNATURE-
___
Qgis-user mailing list
[hidden email] 
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: 
http://lists.osgeo.org/mailman/listinfo/qgis-user 

If you reply to this

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

2016-01-28 Thread Nicolas Cadieux

Hi,
For all those interested, the zip file contains a direct http link to 
all the strmgl1 data.You just need to cut and paste the links in a 
browser.   You can use a software like win htttrack to download what you 
need or use a python script to do the job.
Cheers
Nicolas

Le 2016-01-28 02:49, Thomas Götzelt-2 [via OSGeo.org] a écrit :
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
> Hi,
>
> ALOS World 3D - 30m (AW3D30) data may be also considered an
> alternative (http://www.eorc.jaxa.jp/ALOS/en/aw3d30/), for the time
> being already available for substantial parts of Southern Asia and
> South America. Informations on how resolution and error margins of the
> dataset compare to ASTERDEM or SRTM30 will be appreciated.
>
> Cheers
>
> Thomas
>
> Am 27.01.16 um 21:35 schrieb Nicolas Cadieux:
>
> > Hi, Aster gdem are not as good with about 7 m error. They are
> > clearly canopy level models.  They cover up to 83d and srtm
> > are south and north of 60d only.  They are more detailed.
> > Nicolas Cadieux M.Sc. Les Entreprises Archéotec inc. 
> > 8548, rue Saint-Denis Montréal H2P 2H2
> > Téléphone: 514.381.5112  Fax: 514.381.4995
> > www.archeotec.ca On Jan 27, 2016 2:38 PM, "Carlos Cerdán [via
> > OSGeo.org] " <[hidden email] 
> >
> > wrote: Hi Eddison: Try r.fillnulls from Processing or directly in
> > GRASS. So, we have 30 m SRTMS in http://www2.jpl.nasa.gov/srtm/ .
> > It'll be interesting to compare with ASTER GDEM Cheers
> > 2016-01-27 13:25 GMT-05:00 Eddison Araya < [hidden email] >:
> >  Hola, how eliminate gaps in SRTM
> > 30 meters?, in QGIS see no data areas (gaps). Thank you
> > ___ Qgis-user mailing
> > list [hidden email] List info:
> > http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
> > ___ Qgis-user mailing
> > list [hidden email] List info:
> > http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
> >
> >If you reply to this email, your message will be added to
> > the discussion below:
> > http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp52
> 47652p5247658.html
> >To start a new topic under Quantum GIS - User, email
> > ml-node+s1560n4125267h38@n6.nabble.com To unsubscribe from
> > Quantum GIS - User, click here . NAML
> >
> >
> >
> > -- View this message in context:
> > http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp52
> 47652p5247674.html
> >
> >
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
> >
> >
> >
> > ___ Qgis-user mailing
> > list [hidden email]  
> List info:
> > http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
> >
>
> -BEGIN PGP SIGNATURE-
> Version: GnuPG/MacGPG2 v2
> Comment: GPGTools - https://gpgtools.org
>
> iQEcBAEBCgAGBQJWqclqAAoJEBQdD854XvN/4rAH/3kJMUSTlrpkMUfIxfnWUigw
> oX4ZXnsk9GIUTPgi/gx9WjijrF0w/bGT+83SgoOoSpcQD0875ABIDGH18oIiVCK+
> DXVVn7OO0RqrLWjlU+tf2tQCAAxrC6kjlV2au4HaRplVLGjHyBWRchXR9xY2zPcc
> dniqq9HGMoYoS7AatX8cQgp8PtTsmvaZaTM4CdCpk4xXaGbZYA8jK2AgjTxNsviq
> F/JpfdokwoDmO7iCuzcAFdYxfFHJsdR1xMArfG3WblE1eaNiRms3kKO30mHyowSR
> DBz2lPS3sh5D389gcvvKmxYMy7TDk9NMYTzmYUqJ+yxCgxJdFy6FWe6mZ5+6cF0=
> =gnTR
> -END PGP SIGNATURE-
> ___
> Qgis-user mailing list
> [hidden email] 
> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
>
> 
> If you reply to this email, your message will be added to the 
> discussion below:
> http://osgeo-org.1560.x6.nabble.com/Eliminate-GAPS-SRTM-30-metros-tp5247652p5247716.html
>  
>
> To start a new topic under Quantum GIS - User, email 
> ml-node+s1560n4125267...@n6.nabble.com
> To unsubscribe from Quantum GIS - User, click here 
> .
> NAML 
> 
>  
>



Index of _SRTM_SRTMGL1.003_2000.02.11.zip (345K) 





--
View this message in context: 
http://osgeo-o

[Qgis-user] Eliminate GAPS SRTM 30 metros

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

Re: [Qgis-user] Eliminate GAPS SRTM 30 metros

7 matches

Site Navigation

Mail list logo

Footer information