Hot answers tagged cartography
You can adjust the extent using the xlim and ylim parameters. library(rgeos) p1 = readWKT("POLYGON((0 1,0.95 0.31,0.59 -0.81,-0.59 -0.81,-0.95 0.31,0 1))") par(mfrow = c(1,2)) plot(gBuffer(p1,width=-0.2),col='black',xlim=c(-0.5,1),ylim=c(-0.5,1), xlab="Original") plot(gBuffer(p1,width=-0.2),col='black',xlim=c(-1,1),ylim=c(-1,1), xlab="Zoomed Out")
180 degrees of latitude = 7200 0.025° sections from pole to pole 360 degrees of longitude = 14400 0.025° sections along the equator 7200 * 14400 = 1.0368 * 10^8 0.025°x0.025° squares (not actually squares)
As an alternative to ArcMap, I just installed ArcGIS Pro 1.1 which now supports extent indicators. In my first test of using leader lines I created the style below which I don't think could be done out-of-the-box using ArcMap. There are various other styles and options to experiment with there.
Following on from what you wrote and the links in the comments sections, I got a more refined hatched boundary (only within the polygons). I used the "Difference Tool" (Vector/Geoprocessing Tools/Difference) and used the following settings to clip the buffer to the extent that I wanted: I used a -20m value for the buffer, but if you wanted longer ...
i believe this may be an answer https://www.census.gov/geo/reference/centersofpop/animatedmean2010.html http://www.esri.com/news/arcuser/0311/population-drift.html plus this is a really interesting article on the math behind finding the mean center - http://www.ams.org/samplings/feature-column/fcarc-population-center long story short: somewhere in ...
Here is a list of tools i know about so far: Ushahidi is an existing cloud variant (crowdmap). Ushahidi is a web and mobile platform (open source) which lets you create, vizualize and share posts placed in the map. MapChat is an open source tool for integrating maps with real-time (as well as asynchronous) discussions between multiple users.
ESRI provided an exercise for using geoprocessing tools for representation. In the final steps it demonstrates the process for masking and shows the results. http://resources.arcgis.com/en/help/main/10.1/index.html#//00s50000005n000000 I hope this helps!
Here are a few resources I've found about automatically generating maps for transit and other data: Stott et al. "Automatic Metro Map Layout Using Multicriteria Optimization" - Abstract: "This paper describes an automatic mechanism for drawing metro maps. We apply multicriteria optimization to find effective placement of stations with a good line ...
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