Re: [Qgis-user] Clipping a Raster

[Borys Jurgiel]

It seems your GdalTools plugin is disabled. You should be able to enable it in 
the plugin manager.

Regards,
Borys

On środa, 13 grudnia 2017 10:09:18 CET Mark Polczynski wrote:
> Sorry for the simple question, but how do you clip a raster in 2.18? I
> believe I used to use something like  Raster>Extraction>Clipper in 2.14,
> but I don't see that sequence on 2.18.  Here is what I see...
> 
> [image: Inline image 1]


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Clipping a Raster

[ralfwessels]

Hi Mark,
you can do it, like Stefan suggested or if you are looking for the function
in the "Raster" menu, you first have to activate the "GdalTools" plugin.
After that you will find the Clip function under Raster > Extraction >
Clipper...

Ralf




--
Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Clipping a Raster

[Carlos López PSIG]

Hi,
You need to activate the plugin "Gdal Tools".




* *
*PSIG*
Implementació, gestió i formació SIG

*Carlos López Quintanilla*

www.psig.es
carlos.lo...@psig.es
+34 699.680.261

Nota legal: Este mensaje y cualquier archivo adjunto está destinado
únicamente a la
persona a quien se dirige y es confidencial. Si usted ha recibido este
mensaje por
error, por favor, comuníqueselo al remitente y bórrelo inmediatamente. La
utilización ,
revelación y/o reproducción del mensaje puede constituir un delito.

Protección de Datos: Le informamos que sus datos de contacto electrónico se
hallan
incorporados a un fichero titularidad de CARLOS LÓPEZ QUINTANILLA, al
objeto de
envío de información, respuesta a consultas y contactos genéricos.
Puede ejercer los derechos de acceso, rectificación, cancelación y
oposición que
establece la LOPD en cualquier momento, mediante escrito, acompañado de
copia de
documento oficial que le identifique, dirigido a CARLOS LÓPEZ QUINTANILLA
CL. P
arellada, 8 E2 de Corbera de Llobregat, 08757-Barcelona.

También podrá oponerse a nuestros envíos de comunicaciones comerciales
(Art.21.2
de la LSSI) a través de la siguiente dirección de correo electrónico:
ad...@psig.es


2017-12-13 17:09 GMT+01:00 Mark Polczynski :

> Sorry for the simple question, but how do you clip a raster in 2.18? I
> believe I used to use something like  Raster>Extraction>Clipper in 2.14,
> but I don't see that sequence on 2.18.  Here is what I see...
>
> [image: Inline image 1]
>
> --
> Mark Polczynski
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Clipping a Raster

[Stefan Giese (WhereGroup)]

You can use "Clip raster by extent" or "Clip raster by mask layer" from 
the proccessing toolbox


regards
stefan

Am 2017-12-13 17:09, schrieb Mark Polczynski:

Sorry for the simple question, but how do you clip a raster in 2.18? I
believe I used to use something like  Raster>Extraction>Clipper in
2.14, but I don't see that sequence on 2.18.  Here is what I see...

--

Mark Polczynski
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Clipping a Raster

[Mark Polczynski]

Sorry for the simple question, but how do you clip a raster in 2.18? I
believe I used to use something like  Raster>Extraction>Clipper in 2.14,
but I don't see that sequence on 2.18.  Here is what I see...

[image: Inline image 1]

-- 
Mark Polczynski
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Clipping a Raster with a Mask Layer

[Kurt Menke]

Hi Randy,

I used the GDAL clip raster by mask layer tool and got the same result you
did. I then tried the Saga Clip raster with polygon tool and it worked
perfectly.

Kurt 

 

**

Kurt Menke, GISP

Bird's Eye View 

  www.BirdsEyeViewGIS.com 

Work: 505-265-0243

Cell: 505-362-1776

 

___
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] Clipping a Raster with a Mask Layer - update - possible bug

[Randal Hale]

So I've got an update on this.

If I run this with the command line (gdal 2.1):

gdalwarp -cutline acid_forest_buffer.shp low_east.tif output.tif
/Processing input file low_east.tif.//
//Using internal nodata values (e.g. -3.40282e+38) for image low_east.tif.//
//Warning 1: Self-intersection at or near point 2309.5402184630693 
1121.2793755624425//

//ERROR 1: Cutline is not valid after transformation/

I had one community member confirm the clip works in 2.14.1. I think 
ultimately this is a gdal version problem - sort of.


If I look at the shapefile in QGIS I get an error using the topology 
tools looking for overlaps. I seem to have 2 multipolygons in this data. 
I clean those up and the tool runs as expected.


Is there something with gdal 2.1 that chokes with a multipolygon in 
running this type of clip against a raster?



On 10/07/2016 09:27 AM, Randal Hale wrote:


I've tried this on:

  * 2.14.6 on Windows
  * 2.16.3 on Linux
  * Master on Linux

Dropbox Link: 
https://www.dropbox.com/sh/zg8miobad8ax0ef/AABXzPzTd8920I248_IprKjba?dl=0


I have a raster and polygons. All matching in projection. M one worry 
is the raster is a float32 tiff and something it wrong with it. I 
didn't create the raster but I am trying to help someone work their 
way through this exercise for a College Class.


When I use the processing tool to clip the raster with the vector I 
get an output image that in the legend shows the values as being nan - 
which I guess is null. No matter what I do - there is no clip. Just a 
large image that is black or nan (null).


Thoughts? I'm stuck. I don't know if I'm seeing a bug or I've got a 
bad image. The person originally working through this said it all 
works correctly with 2.8 (but I haven't attempted that version as of 
yet).


Randy

--

Randal Hale
North River Geographic Systems, Inc
http://www.northrivergeographic.com
423.653.3611rjh...@northrivergeographic.com
twitter:rjhalehttp://about.me/rjhale
http://www.northrivergeographic.com/introduction-to-quantum-gis
https://www.facebook.com/NRGSInc


--

Randal Hale
North River Geographic Systems, Inc
http://www.northrivergeographic.com
423.653.3611 rjh...@northrivergeographic.com
twitter:rjhale http://about.me/rjhale
http://www.northrivergeographic.com/introduction-to-quantum-gis
https://www.facebook.com/NRGSInc

___
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] Clipping a Raster with a Mask Layer

[Randal Hale]

I've tried this on:

 * 2.14.6 on Windows
 * 2.16.3 on Linux
 * Master on Linux

Dropbox Link: 
https://www.dropbox.com/sh/zg8miobad8ax0ef/AABXzPzTd8920I248_IprKjba?dl=0


I have a raster and polygons. All matching in projection. M one worry is 
the raster is a float32 tiff and something it wrong with it. I didn't 
create the raster but I am trying to help someone work their way through 
this exercise for a College Class.


When I use the processing tool to clip the raster with the vector I get 
an output image that in the legend shows the values as being nan - which 
I guess is null. No matter what I do - there is no clip. Just a large 
image that is black or nan (null).


Thoughts? I'm stuck. I don't know if I'm seeing a bug or I've got a bad 
image. The person originally working through this said it all works 
correctly with 2.8 (but I haven't attempted that version as of yet).


Randy

--

Randal Hale
North River Geographic Systems, Inc
http://www.northrivergeographic.com
423.653.3611 rjh...@northrivergeographic.com
twitter:rjhale http://about.me/rjhale
http://www.northrivergeographic.com/introduction-to-quantum-gis
https://www.facebook.com/NRGSInc

___
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] Clipping a raster image, the output file increases

[Niccolo' Marchi]

Hi  all,
clipping a large raster image (1.3Gb) I tried to use "-co 
COMPRESS=DEFLATE -co PREDICTOR=2" but the output grew till getting an 
error (ERROR 1: TIFFAppendToStrip:Maximum TIFF file size exceeded. Use 
BIGTIFF=YES creation option. ERROR 1: WriteEncodedTile/Strip() failed. ) 
because it was trying to create a >4Gb file.


Am I the only one? Any idea?

Working with osgeo QGIS 2.10.1 64bit on Win7.

All the best,

Nic

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Clipping a raster image, the output file increases

[Jean-Roc Morreale]

the command seems to lack :
* -co BIGTIFF=IF_NEEDED to create a file over 4Gb
* -wo OPTIMIZE_SIZE=TRUE to apply the compression scheme correctly

Le 2015-10-20 13:53, Niccolo' Marchi a écrit :

Hi  all,
clipping a large raster image (1.3Gb) I tried to use "-co
COMPRESS=DEFLATE -co PREDICTOR=2" but the output grew till getting an
error (ERROR 1: TIFFAppendToStrip:Maximum TIFF file size exceeded. Use
BIGTIFF=YES creation option. ERROR 1: WriteEncodedTile/Strip() failed.
) because it was trying to create a >4Gb file.

Am I the only one? Any idea?

Working with osgeo QGIS 2.10.1 64bit on Win7.

All the best,

Nic

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user