[Qgis-user] Raster Calculator Crashing

[GILLEN Finbar]

Hi Nicolas,

Thanks for the feedback, you correct in that reducing the size does not change anything! I will try out the other Raster calculators in the processing toolbox to see if they work while I wait on an install of the latest QGIS version.

Thanks,
Finbar

From: Nicolas Cadieux [mailto:nicolas.cadieux at archeotec.ca]
Sent: 16 January 2019 16:35
To: GILLEN Finbar <finbar.gillen at axa.ie>
Cc: Alessandro Pasotti <apasotti at gmail.com>; qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Raster Calculator Crashing

Hi,

Comprising the file will probably not change anything.  Either the matrix hight and width is too big for the memory or your are running into a new problem.  The calculator was modified.  It can now handle very big rasters at a decent speed.  (Bravo team!) you could use the saga calculator or the gdla_calc.  Both your files will need to have the same extent,  CRS and pixel posting for those algorithms to work. There is a algorithm in the raster menu that will help you match the files.  Beware of the effects this will have on the data.

Nicolas

Le 16 janv. 2019 à 11:25, GILLEN Finbar <finbar.gillen at axa.ie<mailto:finbar.gillen at axa.ie>> a écrit :
Hi Alessandro,

Testing the latest master version involves going through IT security to get an install which can take weeks to get resolved… but I am trying a workaround by using Translate (Convert Format) tool to compress the file and see if it will pass through the calculator.

But in the meantime I will look into getting the latest version of QGIS.

Thanks again,
Finbar

From: Alessandro Pasotti [mailto:apasotti at gmail.com]
Sent: 16 January 2019 14:45
To: GILLEN Finbar <finbar.gillen at axa.ie<mailto:finbar.gillen at axa.ie>>
Cc: qgis-user at lists.osgeo.org<mailto:qgis-user at lists.osgeo.org>
Subject: Re: [Qgis-user] Raster Calculator Crashing


On Wed, Jan 16, 2019 at 3:41 PM GILLEN Finbar <finbar.gillen at axa.ie<mailto:finbar.gillen at axa.ie>> wrote:
Hi,

I am using the Raster Calculator in QGIS 3.2.1 and it keeps crashing. The Raster file is 5,000,000kb in size… does anyone know any way around this?

I this was an issue before but it was resolved - https://issues.qgis.org/issues/18417



Gillen,

a lot of changes have been done on the raster calc lately, can you test latest master version?

--
Alessandro Pasotti
w3:   www.itopen.it<http://www.itopen.it>
*********************************************************************

The contents and any attachments of this electronic mail message are confidential and intended only for the named addressees. Dissemination, forwarding, publication or other use of the message or attachments by any unauthorised person is strictly prohibited.

Unless stated to the contrary, any opinions expressed in this message are personal and may not be attributed to AXA Insurance dac or any member of the AXA Group of Companies.

AXA Insurance dac is regulated by the Central Bank of Ireland. For business in Northern Ireland, AXA Insurance dac is authorised by the Central Bank of Ireland and subject to limited regulation by the Financial Conduct Authority. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request. AXA Insurance dac is a private company limited by shares, registered in Ireland number 136155. Registered Office Wolfe Tone House, Wolfe Tone Street, Dublin 1.

"AXA Supporting Road Safety in Ireland"

Internet e-mails are not necessarily secure. AXA Group does not accept responsibility for changes made to this message after it was sent. To help promote the use of electronic documents and to be kinder to the environment, please consider whether you really need to print this
email.

*********************************************************************
_______________________________________________
Qgis-user mailing list
Qgis-user at lists.osgeo.org<mailto:Qgis-user at lists.osgeo.org>
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

*********************************************************************

The contents and any attachments of this electronic mail message are confidential and intended only for the named addressees. Dissemination, forwarding, publication or other use of the message or attachments by any unauthorised person is strictly prohibited.

Unless stated to the contrary, any opinions expressed in this message are personal and may not be attributed to AXA Insurance dac or any member of the AXA Group of Companies.

AXA Insurance dac is regulated by the Central Bank of Ireland. For business in Northern Ireland, AXA Insurance dac is authorised by the Central Bank of Ireland and subject to limited regulation by the Financial Conduct Authority. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request. AXA Insurance dac is a private company limited by shares, registered in Ireland number 136155. Registered Office Wolfe Tone House, Wolfe Tone Street, Dublin 1.

"AXA Supporting Road Safety in Ireland"

Internet e-mails are not necessarily secure. AXA Group does not accept responsibility for changes made to this message after it was sent. To help promote the use of electronic documents and to be kinder to the environment, please consider whether you really need to print this
email.

*********************************************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20190116/2230dbd6/attachment.html>