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8

There's a lot of subjectivity still in play, but I think a broad answer to your question is that it's getting easier every day to use GeoJSON directly in a leaflet map without tiling, and this is ultimately a good direction for interactive maps to be going. As such I tend to build maps using your third option above. That comes with a few caveats. You ...


4

Echoing Bill: it depends. I would say never/rarely do the second option. Keep your data and styling separate. The first and third options might be rephrased as "when should I use a service to render map features?" and "when should I use Leaflet to render map features in-browser?" For me, I try to do the third option whenever I can. Rendering features in ...


3

What you're trying to create is known as a bivariate map. There's a couple of ways to do this, but since you've already got raster data that leans toward certain methods. The big thing is going to be your color selections, and I'm not sure exactly how to get the blending you desire. Typically this is done with two colors, one for each variable. So A 0 = ...


3

Yes, there is a Flicker group. See also, the Screenshots page on the QGIS.org site for latest samples of maps. Not sure about the Chugach State Park map. Generally, the splash screen map is of a specific area, but not necessarily produced with QGIS.


3

The Mercator projection, is a conformal map projection so any angles measured on the map are the same as if measured on the globe. It also has the property that all straight lines on the map represent loxodromes, or lines of constant azimuth. Those are useful properties in surveying and navigation. Beyond that, however -- and especially when mapping very ...


2

Orthographic projection is able to show the poles, which mercator can not do. Furthermore, the projection looks like the view from outer space, which feels kind of natural. It only shows half of the worlds surface, but that's what you see from outer space. An even more "natural" view would have resulted from a perspective projection, which looks like the ...


2

You don't say what scripting language, so I've assumed python. Have you considered the arcpy.mapping module? Another option is the Mapnik library.


2

If all you need is combined background there is plugin for QGIS called GarminCustomMap to export map easily for Garmin devices which supports custom maps - series 62, 64 as defined here: http://www.garmin.com/us/products/onthetrail/custommaps There is also video tutorial on youtube how to use that QGIS plugin: https://www.youtube.com/watch?v=abffJeSj3zM ...


2

You definitely need coordinates or to join that data with existing polygons/points. A quick look at your data shows that it is broken down into boroughs or district numbers. My next step would be to join this data in ArcGIs or QGIS (whatever solution you have available to you) to either the boroughs or districts. This will allow you to visualize the ...


2

It does really depend on the project and what type of data you're using (and what you know how to use) but Tom Macwright made this handy simple Map Makers cheat sheet: https://github.com/tmcw/mapmakers-cheatsheet


2

@ChrisW said: As far as I know and can find evidence for, you cannot set a classification range below the minimum value in the data. This got me thinking, and I actually found a way to set the classification range below the minimum value. My original issue was built around the fact that the lowest classification range was required to contain the ...


1

While the classification uses similar ranges, the data don't share a range. I think the solution here is to solve it in the legend and color assignments, and not the actual classification. Start with your lower left result, and convert that legend to a graphic. Edit the text to get the ranges you want. I notice all your other images have a 10 unit range, ...


1

I may have a solution for you. If flow in one direction is consistently lower than in the other direction, this would work. I think you have much of the answer included in the question. I would attempt to duplicate the layer and draw the limited flow on top of the greater flow and have them both symbolized by the flow value.


1

A zero-cost solution would be to use Openstreetmap data and the mkgmap toolchain. If your area of interest is not detailed enough, feel free to add missing features (respecting the terms of use of the data you have). For things that don't belong into Openstreetmap, I create gpx files using QGIS, and upload them with basecamp to the GPS unit. ...


1

The world.dat file is a file format specifically for GnuPlot. I haven't heard of it in use anywhere else and I couldn't find anything. In a more recent blog post on that same site, the author talks about updating the world.dat file with better data - specifically from Natural Earth. Since the author starts with shape files, this same data flow could be ...


1

I have worked with staff and students from ITC am have been impressed with them. I don't know much about the BSc program but I'm fairly sure it's in english.


1

I can suggest obtaining a BSc on a remote basis, there is a good programme in Lund (LUMA GIS), Sweden. Another one is offered by University of Gävle (Sweden), you will get Degree of Bachelor of Arts/Science. The program is 3 years long: Study Programme in Computer Science and Geographical Information Technology, 180 cr. You could also search a bit more on ...


1

There is an existing ArcGIS Idea titled Circular callout backgrounds to: Add circular text callout backgrounds in addition to the default rectangular box callout backgrounds. If you have not already done so, I recommend that you add your vote to that.



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