Re: [Qgis-user] Shifting a Geotiff image

2023-08-12 Per discussione Martin Weis via QGIS-User
Dear Perth, On 11/08/2023 09:14, Grant Boxer via QGIS-User wrote: I have a GeoTIFF image created using Web ODM and is mis-aligned by 1 to 1.5 m and I would like to move the image to register with the surveyed ground control points. I can see vector tools to do this, but no raster tools. Anyone

Re: [Qgis-user] Non-standard map layout ("projection")

2023-04-23 Per discussione Martin Weis via QGIS-User
Hello Lester, On 19/04/2023 08:49, Lester Anderson via QGIS-User wrote:> A quick question. Is it possible to project or convert vector data into:> (1) Dymaxion (Fuller Projection)> (2) Watermans Butterfly Projection> (3) Peirce Quincuncial Projection Hormann held a (german) talk and implemented

Re: [Qgis-user] A few question

2020-07-03 Per discussione Martin Weis
On 02.07.20 19:22, blubee blubeeme wrote: > I have some aerial images; Are they georeferenced already? > Warning 4: Failed to open /usr/share/qgis/resources/data/world_map.gpkg: > Permission denied > then one of the below messages for each picture that's being imported. >

Re: [Qgis-user] wishing for accurate lattitude/longitude from a cell phone

2020-05-25 Per discussione Martin Weis
Dear list, I would like to add some things here, since I am trying to use RTK GPS in the field with mobile devices. > 1) Accuracy of GPS Devices RTK GPS or any more precice GPS technology will be external, you cannot get around the missing measurements and lack of algorithms in consumer grade

Re: [Qgis-user] About plant count

2019-09-04 Per discussione Martin Weis
Hello! Am 02.09.19 um 02:56 schrieb carlos h: > Hello, thank you very much, of course, I have examples, they are images of > Drones in RGB. > > I will attach some images (not the orthomosaic since they are very heavy) > in banana, palm oil and pineapple: >

Re: [Qgis-user] [ubuntu] Error when starting QGIS

2018-11-22 Per discussione Martin Weis
Am 22.11.18 um 09:47 schrieb psantana: > I installed via apt-get the latest version of QGIS following this > documentation: > https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu > > qgis=1:3.4.1+28bionic > ubuntu version: 18.04 > > When starting to start the app I get this

Re: [Qgis-user] Measurement tool

2018-11-02 Per discussione Martin Weis
Am 02.11.18 um 13:36 schrieb Josh Hull: > inaccurate measurement when I am measuring both area and straight line > and its using WGS 84 / Pseudo-Mercator. I primarily use the software for > maps in north central United States. Pseudo-mercator might be your issue here, it might have large

Re: [Qgis-user] QGIS Project

2018-04-14 Per discussione Martin Weis
Hello Marco! Am 12.04.2018 um 08:31 schrieb Marco Dinges: > What my question is now about, is that I want to receive position > data (coordinates) from another program (not a GPS) on the raspberry > and track that position on my map. Even better with a visualization > on my desktop. Another thing

Re: [Qgis-user] Help in Field Calculator

2018-04-05 Per discussione Martin Weis
Hi, Am 04.04.2018 um 14:27 schrieb Daniel Alejandro Montecinos Rubilar: > What I try to do is then updated columns in a data layer with > another layer. For example , I have two layers A = Poligono , B = > Points . The layer B contains real values. Then would do two things. > 1. Count how many

Re: [Qgis-user] Can't install / use NTv2 grid file.

2018-03-26 Per discussione Martin Weis
Hello, Am 26.03.2018 um 12:09 schrieb Jürgen E. Fischer: > On Sat, 24. Mar 2018 at 15:20:01 -0700, tomi_w wrote: >> (http://geodaten.bayern.de/oadownload/bvv_internet/kanu/BY-KanU_Oberfranken_Testdatei_vorlaeufig.zip), >> which I have extracted and copied to /usr/share/proj/oberfranken.gsb. > >

Re: [Qgis-user] Why does this message keeps occuring in QGIS? GEOS geoprocessing error: One or more input features have invalid geometry.

2018-01-17 Per discussione Martin Weis
Am 16.01.2018 um 21:05 schrieb David Shi: > It is not merge. I am trying to intersect two vector ShapeFiles. > Each contains a collection of polygons. Each collection of polygons > cover the same geography, but has different boundaries. Can I do > that? Sounds like a classic intersect, did you

Re: [Qgis-user] Areal Interpolation in QGIS

2018-01-16 Per discussione Martin Weis
Hello! Am 16.01.2018 um 12:53 schrieb David Shi: > Is there any Areal Interpolation code in QGIS? Yes, but it depends on what you have. Activate interpolation plugin and use it. If you have points and want areas from them, try voronoi, if you have two layers you want to combine, there are

Re: [Qgis-user] txt to shp

2010-09-06 Per discussione Martin Weis
Hello John, Am 04.09.2010 20:58, schrieb john: Hello Gerardo, After seeing how long it takes to load and view a large file in qgis 1.5.0 I see the advantage of using smaller excel files of one or two degrees lon and lat. Do you know of a quick and easy way to join points with attributes of