[Qgis-user] QGIS Model Designer

Nicolas Cadieux njacadieux.gitlab at gmail.com
Wed Jan 12 08:31:27 PST 2022


HI,

Python is installed with QGIS.  The easiest way is to go to plugins -> 
Python console.

Nicolas

On 2022-01-12 5:37 a.m., Richard McDonnell wrote:
>
> Hi,
>
> Thanks for getting back. I am afraid I have no Python, but I will give 
> it a go!!
>
> Regards & Thanks
>
> Richard.
>
>
> ——
> Richard McDonnell MSc GIS, FME Certified Professional
> /FRM Data Management/
>
> ——
> Oifig na nOibreacha Poiblí
> Office of Public Works
>
> Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
> Jonathan Swift Street, Trim, Co Meath, C15 NX36
> ——
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> https://gov.ie/opw
>
> ——
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> *From:*Ujaval Gandhi <ujaval at spatialthoughts.com>
> *Sent:* 11 January 2022 14:22
> *To:* Richard McDonnell <richard.mcdonnell at opw.ie>
> *Cc:* qgis-user at lists.osgeo.org
> *Subject:* Re: [Qgis-user] QGIS Model Designer
>
> The batch processing and modeler are mising the 'iterate' feature, and 
> this type of batch processing + merge functionality will be useful. I 
> have a tutorial on how to write a bit of pyqgis code to do this that 
> shows exactly the use case you have. But it can be used with any other 
> processing algorithm. 
> https://www.qgistutorials.com/en/docs/3/processing_algorithms_pyqgis.html
>
> Image removed by sender. Logo <https://spatialthoughts.com/>
>
> 	
>
> *Ujaval Gandhi***
>
> Spatial Thoughts
>
> mobile: +91-8095684687
>
> email: ujaval at spatialthoughts.com <mailto:ujaval at spatialthoughts.com>
>
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>
> On Mon, Jan 10, 2022 at 4:52 PM Richard McDonnell 
> <richard.mcdonnell at opw.ie> wrote:
>
>     Hi All,
>
>     Apologies, but I think I have found a Plugin, which looks
>     promising “Point sampling tool” which seems to do what I want.
>
>     Regards,
>
>     Richard
>
>     *
>     ——*
>     *Richard McDonnell MSc GIS, FME Certified Professional*
>     /FRM Data Management/
>
>     ——
>     *Oifig na nOibreacha Poiblí*
>     Office of Public Works
>
>     *Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36 *
>     Jonathan Swift Street, Trim, Co Meath, C15 NX36
>     ——
>     M +353 87 688 5964 T +353 46 942 2409
>     https://gov.ie/opw <https://gov.ie/opw>
>
>     ——
>     To send me files larger than 30MB, please use the link below
>     https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie
>     <https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie>
>
>     Email Disclaimer:
>     https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
>     <https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/>
>
>     *From:*Qgis-user <qgis-user-bounces at lists.osgeo.org
>     <mailto:qgis-user-bounces at lists.osgeo.org>> *On Behalf Of *Richard
>     McDonnell
>     *Sent:* 10 January 2022 11:18
>     *To:* qgis-user at lists.osgeo.org <mailto:qgis-user at lists.osgeo.org>
>     *Subject:* [Qgis-user] QGIS Model Designer
>
>     Hi all.
>
>     I have been asked to sample over 100 raster pixel values using a
>     single point file.
>
>     I can use the “Sample raster values” Tool, but this only outputs
>     for one Raster. I have looked at batching this, but it will
>     produce 100’s of point files which I will have to merge together.
>     So I was looking at using the Model Designer, but again it can’t
>     accept multiple raster inputs.
>
>     What I would like to know, is how I might easily create a single
>     shapefile with a column for each raster containing the sampled
>     value. The easiest way would be to somehow sample the first raster
>     saving the output then loop back to the second raster, but this
>     time using output from the first sampling to sample the second.
>     This looping would continue until all raster’s had been sampled.
>
>     Any help appreciated.
>
>     Regards,
>
>     Richard
>
>     *
>     ——*
>     *Richard McDonnell MSc GIS, FME Certified Professional*
>     /FRM Data Management/
>
>     ——
>     *Oifig na nOibreacha Poiblí*
>     Office of Public Works
>
>     *Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36 *
>     Jonathan Swift Street, Trim, Co Meath, C15 NX36
>     ——
>     M +353 87 688 5964 T +353 46 942 2409
>     https://gov.ie/opw <https://gov.ie/opw>
>
>     ——
>     To send me files larger than 30MB, please use the link below
>     https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie
>     <https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie>
>
>     Email Disclaimer:
>     https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
>     <https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/>
>
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-- 
Nicolas Cadieux
https://gitlab.com/njacadieux
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