Re: [Qgis-user] QGIS Model Designer

Nicolas Cadieux Wed, 12 Jan 2022 08:31:41 -0800

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 giveit a go!!


Regards & Thanks

Richard.


——
Richard McDonnell MSc GIS, FME Certified Professional
/FRM Data Management/

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*From:*Ujaval Gandhi <uja...@spatialthoughts.com>
*Sent:* 11 January 2022 14:22
*To:* Richard McDonnell <richard.mcdonn...@opw.ie>
*Cc:* qgis-user@lists.osgeo.org
*Subject:* Re: [Qgis-user] QGIS Model Designer

The batch processing and modeler are mising the 'iterate' feature, andthis type of batch processing + merge functionality will be useful. Ihave a tutorial on how to write a bit of pyqgis code to do this thatshows exactly the use case you have. But it can be used with any otherprocessing algorithm.https://www.qgistutorials.com/en/docs/3/processing_algorithms_pyqgis.html


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On Mon, Jan 10, 2022 at 4:52 PM Richard McDonnell<richard.mcdonn...@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.mcdonn...@opw.ie
    <https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie>

    Email Disclaimer:
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    *From:*Qgis-user <qgis-user-boun...@lists.osgeo.org
    <mailto:qgis-user-boun...@lists.osgeo.org>> *On Behalf Of *Richard
    McDonnell
    *Sent:* 10 January 2022 11:18
    *To:* qgis-user@lists.osgeo.org <mailto:qgis-user@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.mcdonn...@opw.ie
    <https://filetransfer.opw.ie/filedrop/richard.mcdonn...@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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Re: [Qgis-user] QGIS Model Designer

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