Questions tagged [references]
When seeking information about specific (not lists of) books, papers, presentations, tutorials, videos of lectures, and other materials
325
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Why do the street labels appear in duplicate on my map- QGIS Training Manual 3. Module: Classifying Vector Data 3.2. Lesson: Labels
QGIS Training Manual 3. Module: Classifying Vector Data 3.2. Lesson: Labels
I'm doing the QGIS Tutorial on labelling but i'm encountering an error. The street labels appear in duplicate in red and ...
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2
votes
1
answer
516
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Finding SRIDs of UTM quadrants or define other quadrants that are not at Equator
Trying to find the SRID of each official-updated ("SIRGAS 2000" or WGS84) UTM quadrant of Brazil.
I am supposing that Latitude bands can use precise local projections, so on different SRID ...
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1
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165
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Split Polygon in one layer based on boundaries in second layer
I have two different polygon layers, 1 and 2. Now i want to split polygons in layer 1 taking reference from polygons in layer 2. Is it possible in qgis???? Please find attached image as reference ...
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0
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82
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Methods for GEE ImageCollection
Is there a list, or other documentation and resources, with functions that I can put in front of any variable in Google Earth Engine?
I'm not talking about functions that come after 'ee.' but ...
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votes
1
answer
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Difference between control point, reference point, and tie point
I georeferenced a map using grid coordinate and road network shapefile (e.g. intersection vertex) as a control point. I didn't acquire a control point through the survey.
I use "control point (...
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2
votes
2
answers
366
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Where is QGIS Desktop data stored?
I've asked for our IT department to install QGIS Desktop on a new laptop. They asked me to confirm whether data for the app is stored in the UK.
As far as I can tell the data is simply stored locally.
...
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1
vote
1
answer
123
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Gdalserver purpose and function
What does gdalserver do and how does it work?
I can't seem to find the documentation explaining how to use it.
- 461
2
votes
1
answer
114
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Learning how to use QGIS Expressions [closed]
What is the best way to learn about expressions in QGIS?
Do you have any book recommendation?
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0
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212
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Reference for Google Earth Engine Map Screenshot
I would like to use a screenshot of a Landsat Image in GEE in an university paper. I read the Terms of Use but still don't really know how to put the references correctly. When the image is displayed, ...
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1
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59
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PDF or HTML versions of Spatial Query Lab (FOSS4G Academy) lectures by Rick Smith
I am Spatial Science Teacher at TAFE NSW teaching Spatial Information Systems online. In 2019 our department started including links to many of the Spatial Query Lab SQL lectures in our resources. We ...
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-1
votes
1
answer
414
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Seeking ArcGIS Pro cheat sheet
Is there a cheat sheet that helps me remember where settings are hidden in ArcGIS Pro?
I am looking for a poster that I can hang next to my monitor.
-1
votes
1
answer
256
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Difference between Linear Hydrography and Area Hydrography
I am looking at the U.S. Census data and downloading the linear hydrography and area hydrography datasets to add to my first GIS map (I'm a new student).
I am self-teaching GIS, and after a multitude ...
- 121
0
votes
1
answer
91
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Seeking Detection Tutorial for Google Earth Engine [closed]
Does anyone know a good tutorial to learn how to detect objects using Google Earth Engine?
My goal is to find a smart way to detect objects (these objects are plantations in Ivory Coast) using Landsat ...
- 463
0
votes
0
answers
60
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How to learn GIS? [duplicate]
Could someone guide me where to study all about GIS and pursue it as a profession without going to college?
I am seeking links.
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votes
0
answers
36
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How to use QGIS Python API? [duplicate]
I am new to Python and QGIS, and I want to automate a process so I want to learn how to use the QGIS Pyhton API to make our own code and do the job.
If anyone knows any tutorial about this then please ...
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2
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0
answers
1k
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Citing/attributing Google basemap in QGIS for research paper [closed]
I have searched Google for how to cite a Google base map in QGIS for a research paper and I cannot find the correct website for their rules for attribution.
Can somebody quickly link me to their ...
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0
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2k
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Getting started with SharpMap in Visual Studio with C#
I am trying to use SharpMap in Visual Studio with C#.
My first step was to go to the Tutorials on CodePlex.
https://archive.codeplex.com/wikipage?title=SharpMap%20Tutorial&referringTitle=Home
But ...
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1
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87
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Converting Long Lat from Address in OpenLayers
I want to convert Long Lat from Address using OpenLayers.
For example:
Address: London => Lat: 51.507351 , Long: 0.127758
I can't document tutorial.
-1
votes
1
answer
340
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Looking for 3D Data Visualization Tutorial in QGIS 3.10
I want to extrude polygons based on a attribute value, and then view this with 3D Map View.
I have been struggling for days and are not getting anywhere. I am using QGIS 3.10.4.
Can someone please ...
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0
answers
62
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Looking for CRS/Projection Services
As a part of my university project I am developing a web service that provides information about coordinate reference systems that were created in USSR.
It will show its Proj.4 and WKT definitions, ...
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6
votes
1
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773
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Parallel processing in QGIS3 on Windows system
I am working on a big vector data set with more than 2.4 million features containing 10x10m squares. I wrote a small script in Python to delete uninteresting fields and perform calculations on the ...
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3
votes
1
answer
623
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Seeking tutorial to split group of layers in QGIS
I am trying to split a group of layers, but I can't find anything online about it. I have a layer with a paper clip on it (in the sidebar). I can't figure out how to break it.
Could you link me to a ...
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2
votes
1
answer
619
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Converting ArcSDE point data from image to MSSQL geometry
I have a bunch of points in an SDE table which is currently stored in an MSSQL database.
The full entry is below, while the data i'm trying to convert from binary to geometry is: ...
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0
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505
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Wrong coordinate
I'm working on Sudan
I opened a Google map layer from the quick map services
I don't know how to set the project coordinate system to get to correct longitude and latitude
Should the project have a ...
1
vote
0
answers
37
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Satellite moving target tracking simulation
I am trying to create a Simulation of an earth-pointing satellite.
The satellite should track a moving target on the ground via an on-board camera.
How can I calculate the goal attitude of the ...
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4
votes
1
answer
2k
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Converting Model in Plug-in in QGIS
Recently, I started making a model on QGIS and now I want to transform it into a plug-in, but it seems that I have to change the code to do it, otherwise it won't work.
What changes are required to ...
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2
votes
1
answer
176
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Seeking tutorials online explaining how to draw squares (having specific length) in QGIS?
I need to produce in QGIS a square having a specific dimension (1km x 1km). First I created a new polygon layer, but when I start editing through the Advanced editing tool, the program crashes. I ...
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2
answers
1k
views
How to make a fictional city map? [closed]
I'm currently making fictional city for my novel project, and I need a tool for making city map. I tried Adobe Illustrator, but it'll be quite hard labeling each streets, parks, buildings etc. I saw ...
1
vote
1
answer
32
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Where can I find images of the Buttons? [duplicate]
I am trying to write a tutorial for simple QGIS functions. I would like to include a set of buttons, each with an explanation of what its function is. Can anyone tell me where I could find the buttons ...
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0
votes
1
answer
92
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Label or font colors on an imagery background examples
I have been in searching of a website that was done by somebody from ESRI that wrote about...if I remember right...it was in either on the ArcGIS Mapping Center or in the ESRI Technical support ...
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317
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What is QGIS private cloud?
I am working on a conservation project involving rare species and we have a lot of sensitive data and about 50 people to whom we need to supply maps to. At least at this stage we can not justify ...
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1
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75
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Seeking tutorials about GIS workflows in FME? [closed]
I have never used FME for spatial processes before. However, I would like to use it in automating some GIS processes and learn.
Are there are any specific tutorials that explain this?
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1
vote
1
answer
2k
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Hosting raster tiles on GeoServer? [closed]
I am new to GIS world. I am trying to host raster images (TIFF) which I need to convert in tiles and host on GeoServer and prepare the service URL so that any user using that service zoom to any ...
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2
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0
answers
62
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Searching styles for indoor maps
I have data that represents Airport floor plans stored in GeoJSON format.
Are there any standards, guidance, or good practices for Indoor Maps Styling?
Any references or resources would be useful.
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votes
2
answers
71
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Learning DEM resources? [closed]
I'm starting on a problem where I need to find the high point inside a polygon that exists inside the bounds of a DEM tile. I'm teaching myself GDAL and I'll be using Python to access the GDAL library....
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16
votes
2
answers
623
views
Transferring flows (connections and values) between polygons in QGIS
In QGIS there are two shapefiles representing the moving data between cells and one additional layer, see image below
Moving data defined by:
A polygon 'LayerA' (transparent squares with red outline)...
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2
votes
1
answer
328
views
Inherited values between polygons in QGIS [duplicate]
In this project, I have three polygons, see the image below
'Polygons_From', includes input attributes, i.g. "Value_1", "Value_2", "Value_3", and $area for each quadrate ...
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1
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1
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128
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Citing data on map layout?
I am working on a thematic site map for a scientific study. In addition to my own data that will be displayed on the map, I have included reference data from U.S. federal agencies (e.g. National ...
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0
answers
373
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Understanding proj4, epsg and esri *.prj in depth? [closed]
Where can I find a good resource that teaches me
1) about the difference between proj4, EPSG and ESRI *.prj? (Why do several coordinate system definitions exist? When should I use which? How are they ...
- 542
4
votes
0
answers
109
views
How to read PyQGIS documentation? [closed]
As I get more into QGIS scripting, I refer to the documentation often and usually without success. I have trouble deciphering how to interpret the classes, etc.
I've been really struggling to create ...
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votes
1
answer
66
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Learning to use QGIS online? [duplicate]
I want to start using QGIS. I have worked in ArcGIS but I would like to start learning QGIS online.
Any suggestions for good online courses (hopefully free or not very expensive)?
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1
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249
views
Seeking MODIS Land Surface Temperature reference? [closed]
Can anyone point me toward an article that converts the LST values on the MODIS LST Image to degrees Celsius?
My purpose is find a reference (article, book or theses) for this formula that converts ...
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4
votes
4
answers
2k
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Using WinForms with ArcGIS Pro SDK?
I want to port a tool developed in ArcObjects for ArcMaps into ArcGIS Pro using the ArcGIS Pro SDK.
The tool's UI was created using WinForms but to recreate the UI in ArcGIS Pro is looks like I would ...
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1
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2k
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Developing QGIS Python plugins using Jupyter?
Is it possible to run PYQGIS commands using Jupyter notebook and, if so, is there any documentation to develop QGIS plugins using Jupyter?
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322
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Creating polygon from leased unit metes and bounds calls using ArcMap? [closed]
I have a dataset containing with metes and bounds listing an area.
I want to build a layer from these calls and produce the lines (polygons) that show the area.
I know there may be a bit of ...
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1
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92
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Have you all solve importing Z point from dxf to QGIS? [duplicate]
I have read all the answer about importing dxf to QGIS, but I still not understand yet.
Does anyone have a video link (youtube or another) that show me step by step to export dxf with Z point to QGIS?...
1
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0
answers
34
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Recommended Books on Arcpy/Python and GIS [duplicate]
Does anyone have recommendations on books/workbooks that I can read that goes beyond a beginner's level for Arcpy/Python with GIS? I've written several scripts, some simple, some complex, but I want ...
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votes
1
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10k
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Latitude, longitude, projections, CRS [closed]
I'm confused about the following basic points:
Do lat/long points have a projection or are they projection agnostic?
Do these points live in a sphere or a plane?
I understand that projections are ...
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2
answers
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Why did Esri create .zlas compressed LiDAR files instead of adopting .laz?
I am talking about the Esri Optimized LAS file format for compressed LiDAR files (.zlas).
While the uncompressed format (.las) from ASPRS was adopted by practically the entire Remote Sensing and GIS ...
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5
votes
3
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Surveys showing GPS accuracy in different models of smartphones?
Are there any surveys that give accuracy in meters for different smartphones (e.g, iPhone 6: 8 meters, Samsung Galaxy S8: 7 meters) regardless of what the statistical method is being used?
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