Re: [Qgis-user] How to calculate surface volume from UAV DEM tif files in QGIS
Sean, Ignore my first line, it’s a typo. I got dragged away to something else, came back to this and forgot to read the email before I sent it. 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 1 647 6543 https://www.opw.ie —— To send me files larger than 30MB, please use the link below https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie Email Disclaimer: https://www.opw.ie/en/disclaimer/ From: Qgis-user On Behalf Of Richard McDonnell Sent: 08 June 2020 17:47 To: Sean Hill ; qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] How to calculate surface volume from UAV DEM tif files in QGIS Hi Sean, As you are looking at volumes, Im assuming you have two DEM’s one with the volume you want to calculate and the other without? The link below will show you an example of this https://www.youtube.com/watch?v=pRNtux5Lxvg 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 1 647 6543 https://www.opw.ie —— To send me files larger than 30MB, please use the link below https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie Email Disclaimer: https://www.opw.ie/en/disclaimer/ From: Qgis-user mailto:qgis-user-boun...@lists.osgeo.org>> On Behalf Of Sean Hill Sent: 08 June 2020 16:15 To: qgis-user@lists.osgeo.org<mailto:qgis-user@lists.osgeo.org> Subject: [Qgis-user] How to calculate surface volume from UAV DEM tif files in QGIS Is it possible to calculate surface volume from aerial photographs (orthomosaic maps in DEM tif file format) in QGIS? Everything I have found on the internet refers to using satellite images. I did find one article on generating surface volume from drone imagery but is difficult to understand as it is missing some steps and/or the steps aren't clear and do not render the same results from step to step even though I follow the steps to the letter. Please help Sean ___ 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] How to calculate surface volume from UAV DEM tif files in QGIS
Hi Sean, As you are looking at volumes, Im assuming you have two DEM’s one with the volume you want to calculate and the other without? The link below will show you an example of this https://www.youtube.com/watch?v=pRNtux5Lxvg 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 1 647 6543 https://www.opw.ie —— To send me files larger than 30MB, please use the link below https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie Email Disclaimer: https://www.opw.ie/en/disclaimer/ From: Qgis-user On Behalf Of Sean Hill Sent: 08 June 2020 16:15 To: qgis-user@lists.osgeo.org Subject: [Qgis-user] How to calculate surface volume from UAV DEM tif files in QGIS Is it possible to calculate surface volume from aerial photographs (orthomosaic maps in DEM tif file format) in QGIS? Everything I have found on the internet refers to using satellite images. I did find one article on generating surface volume from drone imagery but is difficult to understand as it is missing some steps and/or the steps aren't clear and do not render the same results from step to step even though I follow the steps to the letter. Please help Sean ___ 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] How to calculate surface volume from UAV DEM tif files in QGIS
Hi Sean, In the GRASS toolbox you can find some tools to handle volumes. I found this post: https://gis.stackexchange.com/questions/168035/calculate-volume-over-sloped-ground-in-grass-gis Hope it helps. Greetings Wouter Op ma 8 jun. 2020 om 17:13 schreef Sean Hill : > Is it possible to calculate surface volume from aerial photographs > (orthomosaic maps in DEM tif file format) in QGIS? > > Everything I have found on the internet refers to using > satellite images. I did find one article on generating surface > volume from drone imagery but is difficult to understand as it is > missing some steps and/or the steps aren't clear and do not render the > same results from step to step even though I follow the steps to the > letter. > > Please help > > Sean > ___ > 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] How to calculate surface volume from UAV DEM tif files in QGIS
Hi, I imagine you are looking for the area? You can make a polygon and measure the area of a shape. https://gis.stackexchange.com/questions/23355/calculating-polygon-areas-in-qgis You can also use the distance measure tool in the toolbar and use the area option. Nicolas Cadieux Ça va bien aller! > Le 8 juin 2020 à 11:13, Sean Hill a écrit : > > > Is it possible to calculate surface volume from aerial photographs > (orthomosaic maps in DEM tif file format) in QGIS? > > Everything I have found on the internet refers to using > satellite images. I did find one article on generating surface > volume from drone imagery but is difficult to understand as it is > missing some steps and/or the steps aren't clear and do not render the > same results from step to step even though I follow the steps to the letter. > > Please help > > Sean > ___ > 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] How to calculate surface volume from UAV DEM tif files in QGIS
Is it possible to calculate surface volume from aerial photographs (orthomosaic maps in DEM tif file format) in QGIS? Everything I have found on the internet refers to using satellite images. I did find one article on generating surface volume from drone imagery but is difficult to understand as it is missing some steps and/or the steps aren't clear and do not render the same results from step to step even though I follow the steps to the letter. Please help Sean ___ 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
