Questions tagged [references]

When seeking information about specific (not lists of) books, papers, presentations, tutorials, videos of lectures, and other materials

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21 views

Tutorial resources for bringing QGIS or Open Street Map maps into Microsoft Power BI dashboard

We have produced various maps in QGIS showing the location of healthcare clinics here in Nepal. We're looking for "start from scratch" tutorial resources for connecting the map into Power BI....
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98 views

Seeking tutorial for advanced QGIS-PlugIn development [closed]

There are some pretty good basic tutorials explaining how to develop a basic PlugIn for QGIS, like for example https://www.qgistutorials.com/en/docs/3/building_a_python_plugin.html. They basically all ...
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13 views

Best Sources of Earth's Topographic/Altitude & Bathymetric Data? [closed]

I used some data from Nasa (Topographic & Bathymetric) to create a 3D (non-round) model of the Earth's surface. Those images are large enough for what I need, but they are greyscale images that ...
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0answers
16 views

pointers to algorithms to analyze and “compress” GPS/GPX tracks [duplicate]

I am a retired professional software engineer. I ride dirt bikes (motorcycles) in the mountains recording tracks with various GPS devices. I'd like to write some software (since that is what I did for ...
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41 views

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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31 views

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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53 views

How do I cite/attribute a Google basemap in QGIS for a research paper?

I've done a billion search queries on 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 ...
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11 views

Statistical measure to express confidence of colocalization hotspots

I am new to analyzing spatial data and I am having trouble refining the following problem formulation: I have 4 species, captured in 4 separate channels (plotted below). I would like to identify spots ...
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125 views

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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17 views

Python Resources for Remote Sensing [duplicate]

I am a student with very little experience coding, and no experience with Python. I was told by my Honours Project Supervisor that I should try and learn, at the very least, the basics of coding in ...
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1answer
45 views

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.
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25 views

What are some good, up-to-date, resources for learning MapServer? [closed]

I am attempting to learn MapServer, and am looking for some solid resources for doing this. I am new to working with both MapServer and Geospatial Information Systems (GIS). I have read through much ...
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1answer
62 views

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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50 views

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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1answer
158 views

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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28 views

QGIS 3 and What3words [duplicate]

I'm fairly new to QGIS 3, but need to be able to look up a W3W address and also show it's location as a label. I understand there is a plugin from Boundless for QGIS 2 but it doesn't work in 3. I ...
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1answer
147 views

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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1answer
176 views

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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66 views

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 ...
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0answers
23 views

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 ...
2
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1answer
308 views

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 ...
2
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1answer
158 views

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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2answers
502 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 ...
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1answer
30 views

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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1answer
54 views

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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1answer
196 views

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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1answer
53 views

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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1answer
413 views

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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0answers
43 views

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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2answers
64 views

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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2answers
507 views

Transferring flows (connections + values) between polygons

In QGIS there are two shapefiles representing the moving data between cells and one additional layer, see image below Moving data defined by: Polygon "LayerA" (transparent squares with red outline)...
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1answer
174 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 (on the image there are two ...
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1answer
61 views

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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0answers
141 views

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 ...
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1answer
42 views

Calculating Viewshed of a region rather than a point [closed]

There are various calculations to find the viewshed of a point and all of them have different runtimes. the fastest is the calculation of line of sight angle and compare with upcoming cells. But what ...
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0answers
87 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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1answer
60 views

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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1answer
101 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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4answers
757 views

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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1answer
1k views

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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0answers
44 views

QGIS for beginners [duplicate]

Could anyone suggest tutorials for a beginner in QGIS? I've gone through the ones teaching you how to compile a basic map and such things, now I need something more.
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1answer
167 views

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 ...
1
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1answer
52 views

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?...
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0answers
29 views

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 ...
3
votes
1answer
4k views

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 ...
5
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2answers
1k views

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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2answers
1k views

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?
2
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1answer
377 views

Understanding OpenLayers? [closed]

I realized a project with OpenLayers 3 some time ago, but now I do not understand anything anymore. I should install any packages? npm install ol. But even that does not work. I now have the ...
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6answers
126 views

Seeking topics to be mentioned in beginners guide on QGIS? [duplicate]

Currently I am compiling a FAQ for my company on QGis, since some people feel the need to work more with QGis. I am the person to go to, when some specific problems appear, but I see a need to give ...
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1answer
133 views

Seeking tutorial on Time Slider in Carto?

I want to add a time slider to a map. It looks as if I have to do that via CartoCSS but I really don't know where to start. Unfortunately, I don't understand what all the other posts regarding this ...

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