GeoListPlot: exact placement of label

Questions
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1

Re Mathematica 10.3 under Windows 8.

I use GeoListPlot to show Italy. To mark Rome, I use Labeled[…, Style[“Rome”,12,Blue]] – this puts the label “Rome” to the upper-right of the marker.

How do I reposition the label to the lower-left and in general, how do I specify the relative placement about the marker?

Finally, Italy displays with Sardinia and Sicily shown. How do I suppress these?

Thanks.

2

Hi Bruce, if you could post your complete code an image of output, it’d be great, this site is completely equipped for that. It would save us time from interpreting and help to answer the question. Thanks!

3

Sam

The code and graphic follows (I didn’t want to post since it’s large). I actually typed:

GeoListPlot[{
    Entity["Country", "Italy"], 
    Labeled[Entity["City", {"Rome", "Lazio", "Italy"}], Style["Rome", 14, Blue]]}, 
  GeoBackground -> None]

sadfgretwyeur7e6r5we4rtqe.png
sadfgretwyeur7e6r5we4rtqe.png360×427 14.4 KB

Thanks for asking.

4

You may consider switching to GeoGraphics:

romePosition = 
  Entity["City", {"Rome", "Lazio", "Italy"}]["Coordinates"];
GeoGraphics[{Entity["Country", "Italy"], PointSize[Large], 
  Point[romePosition], Text["Rome", romePosition, {1, -1}]}]

sdt45yfgbq5dfav.jpg
sdt45yfgbq5dfav.jpg354×420 62.1 KB

5

Thank you, Gianluca. That works!

Is there a way to suppress the display of Sardinia and Sicily? It’s easy enough to cut these out in a graphics editor but I’m hoping there’s a Mathematica function or option that does so.

Bruce

6

I don’t know if there is a built-in function for that purpose. One workaround is to extract the contours of Italy with Entity["Country", "Italy"]["Polygon"], delete the island parts of it, and then display the result with Geobackground->None. The look of the map is quite different, but it may work for you.

7

More precisely:

itcont = Entity["Country", "Italy"]["Polygon"];
GeoGraphics[Line[GeoPosition[itcont[[1, 1, 1]]]], 
 GeoBackground -> None]
8

Perfect. That’s exactly what I sought. Others will undoubtedly find it valuable, too. Thanks again, Gianluca.

Bruce