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Questions tagged [references]

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

0
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0answers
17 views

Learning resources for Enterpise GIS with FOSS? [on hold]

I am looking for some online resources to learn enterprise GIS with open source tools i.e. equivalent of ESRI enterprise geodatabase, sde and versioning concept. I am looking for some online trainings,...
0
votes
0answers
10 views

How to cite greenest pixel composite images derived from Google Earth Engine?

I am using two greenest pixel composite images via Google Earth Engine for a project but am unsure how to cite this data. Do I cite it as regular Landsat data?
13
votes
2answers
340 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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0answers
12 views

Real-World Modelling Applications for ECI/ECF?

What are a few real-world examples for ECF and ECI (with more focus on an ECI example). I have read several articles and it only presents these concepts through physics and trig, lacking real-world ...
1
vote
1answer
90 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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0answers
20 views

Accessing Feature Service via ArcGIS REST API to Customize App in Operations Dashboard?

Beginner here Just learned how to construct url to access the feature services needed to build the customized app I envision in Operations Dashboard, but struggling to find a tutorial/resources ...
1
vote
1answer
39 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 ...
1
vote
0answers
33 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 ...
0
votes
1answer
31 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 ...
0
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0answers
32 views

Submitting QGIS case study?

Where can I submit a QGIS case study? Any email sent to qgis-community-team keeps bouncing back.
3
votes
0answers
74 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 ...
0
votes
0answers
24 views

Vector response from TomTom Maps API

I am exploring TomTom Maps API for a project I am working on. Below is the reference link I used : https://developer.tomtom.com/maps-api/maps-api-documentation-vector/tile. I require to get the ...
0
votes
1answer
45 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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votes
1answer
35 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 ...
0
votes
0answers
22 views

Interpretation of digital surface model (DSM) built from s2p tool and XML file

I am new to GIS. I am using s2p stereo pipeline to build Digital Surface Model (DSM.tif) from it. The height of certain point in this DSM.tif is 84 meters, and you can see from the color bar on ...
0
votes
3answers
113 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 ...
5
votes
0answers
249 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?
-1
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0answers
37 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.
0
votes
1answer
71 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
vote
1answer
32 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?...
1
vote
0answers
26 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 ...
1
vote
1answer
951 views

Latitude, longitude, projections, CRS

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 ...
4
votes
2answers
412 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 ...
4
votes
2answers
603 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
votes
1answer
159 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 ...
1
vote
6answers
90 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 ...
0
votes
1answer
47 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 ...
2
votes
0answers
51 views

Cartographic numbering of points on map

Usually when I create maps with a set of numbered points (e.g. numbered locations on the map which link across to a separate table describing these points) I try to number them in a rough "reading ...
-2
votes
1answer
89 views

Loading LIDAR data to POSTGRES and use it with DJANGO [closed]

I have some project at the Faculty and I don't know from where to begin. I have point cloud data (LIDAR data) and I need to make the website with that data on it and with functions for some sort of ...
0
votes
1answer
911 views

Creating Elevation Profile from Line Shapefile of Contours using QGIS?

I have a line shapefile that contains contour lines. The attribute table of the shapefile has a field that gives the elevation of each line. I would like to draw a line across the contours and get an ...
-1
votes
2answers
72 views

Concise learning resourses for OGC Filters or Filter Encoding Standard (fes) [closed]

When I am doing HTTP GET requests to GeoServer it is fairly easy, but when I need to do http POST request I need to pass XML formatted parameters in the body and for filtering I need OGC filters and ...
1
vote
2answers
114 views

Open source desktop GIS for high school curriculum?

I am a physics teacher and contemplating to integrate GIS to our high school's curriculum. A de facto software looks to be ArcGIS, which is a proprietary software. I wonder what are open-source ...
1
vote
1answer
102 views

How much do leaves on/off affect the number of LiDAR ground returns?

We would like to collect a generic purpose topographic LiDAR dataset over a large region in Belgium. Our minimum requirement is to achieve at least 1 point/m² on the ground. Ideally, we would like to ...
0
votes
2answers
88 views

Button won't work for plug-in in QGIS

I'm learning how to create plug-ins so I've been following the tutorial on this website https://www.qgistutorials.com/en/docs/building_a_python_plugin.html. I understand all of the code and the ...
6
votes
2answers
471 views

Understanding QGIS API documentation

Is there an introduction or guidelines how to read the QGIS API documentation? For example, I want to write a vector layer. A quick search brings me to the API documentation page of ...
-2
votes
1answer
75 views

Seeking GeoNetwork documentation?

I am quite surprised with the lack of solid documentation regarding GeoNetwork 3.4. Is there an ebook or paperback book I could buy, or are there any online resources I can refer to? I am working ...
-2
votes
1answer
90 views

ArcGis Cemetery Mapping [duplicate]

Im currently doing a cemetery mapping system for my thesis using arcgis, however i dont know how to use arcgis, i dont quite get the tutorials that i watch, i just want to make a simple map that can ...
0
votes
1answer
87 views

Learning MapBox GL basics? [closed]

I am not a coder. However, I am familiar with a lot of the most basic concepts. My background is in the traditional GIS software/mapping industry but I have become a lot more interested in where the ...
-2
votes
1answer
187 views

Seeking Tutorials on Geometric Networks [closed]

Does anyone know of any tutorials I can download online or anything of the likes that I can use to better my understanding of how to use or create the geometric network? I'm working on a sewer ...
3
votes
1answer
92 views

Seeking training plugin for QGIS?

I am looking for training app installed inside QGIS, which can be used for training purposes. I mean, a plugin like an e-learning software than can drives you directly inside the QGIS software ...
3
votes
1answer
242 views

Choosing spatial statistical tool in ArcGIS Desktop?

When using Esri's Spatial Statistics toolbox I find the tables on the Spatial Statistics toolbox sample applications page to be very useful. However, there are multiple rows in the tables where ...
2
votes
1answer
51 views

How could we get presentation of FOSS4Geurope 2017?

I was to the FOSS4Geu 2017 and I could not see all the presentation I would to see. So, as the great team try to get all of them, I thought it's possible to get it throught the website. Unfortunatly ...
2
votes
1answer
1k views

Are there any free online GIS courses based around using QGIS? [duplicate]

Does anyone know of any MOOCs for learning GIS which use QGIS for any practical exercises? I've been finding QGIS a fantastic tool for work, but would like to understand it and GIS principles on a ...
5
votes
1answer
308 views

Resources for Arcpy Field Mappings String Syntax

I need to edit an existing python script to add an additional field to a field mapping function. This field mapping function does NOT use the arcpy field mapping object--it instead uses a structured ...
8
votes
3answers
3k views

Learning resources for PyQGIS? [closed]

I'm looking for some resources for learning PyQGIS. It would be interesting having a collection of books or websites that provide some practical examples for learning the syntax or accomplishing ...
0
votes
1answer
1k views

Looking for sample code or documentation for gpxpy waypoint extension data?

I am translating some of my Ruby scripts that manipulate GPX files into Python so I can use them from within QGIS but I can't find any detailed documentation. The readme on github gives a few very ...
1
vote
1answer
623 views

Learning JavaScript for GIS? [closed]

How to start learning javascript for GIS? Should learn JS first and then try to use it for gis or there is any way to learn JS for GIS from beginning? What is the site for learning js for GIS ...
3
votes
0answers
276 views

Understanding relationship between heading, pitch, roll to phi omega kappa? [closed]

I am trying to find some good online reference (formulas, perhaps a script) on the relationship between heading, pitch, roll to phi omega kappa. In my current situation i receive camera orientations (...
1
vote
1answer
1k views

Where is QGIS Server Tutorial?

I'm looking to get QGIS Server working on a Mac with El Capitan OS. When I try to access this link: http://www.qgis.org/wiki/QGIS_Server_Tutorial it gets forwarded to this link: https://issues....
1
vote
0answers
30 views

Interactive map for linguistic purposes [closed]

I would like to learn how to do dynamic/interactive maps for users interested in linguistic issues. In short, the idea is that a user could choose for instance between two syntactic constructions (Put ...