ggmap | A package for plotting maps in R with ggplot2 | Data Visualization library
kandi X-RAY | ggmap Summary
kandi X-RAY | ggmap Summary
ggmap is an R package that makes it easy to retrieve raster map tiles from popular online mapping services like [Google Maps] and [Stamen Maps] and plot them using the [ggplot2] framework:.
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Trending Discussions on ggmap
QUESTION
I've got the following data frame:
...ANSWER
Answered 2022-Mar-23 at 13:16One option would be to create a named vector of colors which assigns to each City
the State
color. Doing so you could map City
on the color aes and set the colors according to the color vector via scale_color_manual
:
QUESTION
I have a dataset with two columns on_road
and at_road
, the combination of which make up a string called geocode_string
. With this string, I wish to geocode these intersections using my google API key. As an example, I have on_road = Silverdale
and at_road = W 28th St
, which combine to form geocode_string = Silverdale and W 28th St, Cleveland, OH
.
However, when I try and use the geocode
function from ggmap
, I get this message: "SILVERDALE and W ..." not uniquely geocoded, using "silverdale ave, cleveland, oh 44109, usa"
.
It seems in this case that R just assumes a location by default, in this case just silverdale ave
. I would like to have R not do this- perhaps just to leave blank the locations for which a unique geocode cannot be found. I can then go through and manually find the coordinates for such cases. I just would like to flag the observations in some way.
I'd also like to point out that in the second row of the dataset, I get S MARGINAL RD and W 93RD ST , CLEVELAND , OH
, an intersection that does not exist in Cleveland. When I paste that string into google maps, it seems to search for a partial match and gives me the coordinates for S Marginal Rd
. Any thoughts why an intersection that does not exist would generate coordinates in this case, but not the Silverdale
case described above? Is there any way to prevent this from happening?
I would greatly appreciate any help!
...ANSWER
Answered 2022-Mar-09 at 16:50I faced a similar problem. The best solution I could come up with was to alter the "geocode" function, that you can find at github here
I included two extra columns: column 'status': informs the number of matches per address. Therefore, you can easily spot where "not uniquely geocoded, using" happened. I also included column address2 to inform what is the second found address (in cases where status > 1).
I did that by including the following parts marked as 'new'
QUESTION
I want to create a "heating map" for a dataset, which contains obs about shooting in NYC Boroughs.
...ANSWER
Answered 2022-Mar-01 at 14:32The dot-dot notation ..some_var..
allows to access statistics computed by ggplot to construct the plot. In this case, the levels for the 2d-density. You can, instead, extract and use them with stat()
: see related question on RStudio community
QUESTION
I'm trying to plot a matrix (mostly random numbers with a few NAs) with longitude/latitude coordinates on a ggmap plot.
This is my code:
...ANSWER
Answered 2022-Feb-22 at 20:01There were two problems here. The first is that all of your values in the Variable
column are the same, because you are just overwriting var_df
with every iteration of your loop. The line
QUESTION
I wrote the docker file like this to deploy the shiny r application
...ANSWER
Answered 2022-Jan-24 at 05:32I got a solution for that
QUESTION
I have created a ggplot graph, with ggmap()
and geom_sf()
, but when I try to visualize it with ggplotly()
there are some elements that are not translated.
It seems that the labels when using
scale_fill_manual()
are not interpreted by plotly.In addition, the labels must be formatted, as can be seen in the graph generated by ggplot, and modified as established in ggplot with the labels argument of
scale_fill_manual()
.The labels should be positioned on the colored boxes. Also as you can see in the graph generated with ggplot.
The frame that adds plotly seems unaesthetic to me and I would like it not to be shown.
The subtitle shown with ggplot2 cannot be found in the plotly generated graph.
Is it possible to hide the menu (download, zoom, ...) plotly from the graphics?.
Finally, in a different vein, I have tried to add information to each area of the graph, when hovering the mouse, but it does not show anything, only the value of the variable geosmunicipios$Renta.media.por.hogar.2016.quantile, which was already displayed by default, using
hoverinfo()
inggplotly()
.It only shows the default text that I have indicated in point 7 by hovering over the lines of the polygons but not in the area of the polygons.
In short, the ggplotly graph should look as close as possible to the one generated with ggplot2.
The file for download is available at: https://www.dropbox.com/s/9nmy0uj00jhc1y4/geosmunicipios.R?dl=0
...ANSWER
Answered 2022-Jan-12 at 05:38This works, but you may not like how it works. The issue with the tool tip only appearing on the line... bottom line, it's a ticket in Github.
This takes the legend, title, and subtitle from the ggplot
object and adds them to the plotly
object as an image. If you resize the image, you have to refresh, to get things aligned again.
QUESTION
I have a map of a region of canada that I created using ggplot and the sf package. At specific points on the map, I'd like to add a line leading to a callout of a graph using data from that location. I know how to do popups in leaflet, but this needs to be a document that works when I print out a hard copy. I also could do it in Illustrator, but coding it in would be best!
Any ideas?
Here is some example code
...ANSWER
Answered 2022-Jan-07 at 22:16One option to add your charts to your map would be via annotation_custom
. In my opinion the tricky part is to get the positions right which probably requires some fiddling to get a nice plot.
But basically you could
- Put the coordinates of your points, the coordinates for the bounding boxes of the charts and the charts themselves into a
tibble
. - Use a helper function to add the
annotation_custom
layers for one chart which includes the chart itself as well as segment connecting the charts to the points. - Use
purrr::pmap
to loop over the rows of thetibble
which we set up in step 1 to add the charts to the map
Note: I added a second point to illustrate the general approach to add multiple charts.
QUESTION
I'm struggling to plot a basemap from ggmap with points (sf object). The most promising solution I came across is this SO answer from @andyteucher. I tried to reproduce it below, but I'm not having much luck. I get the basemap to print but not the points.
...ANSWER
Answered 2021-Dec-14 at 08:52I believe you had an issue with your coordinate reference systems - you seem to have used degrees in context of CRS 3857, which is defined in meters (and so several degrees of magnitude off...)
If my hunch is correct you need to first declare your sf object to be in 4326 (WGS84 = the CRS of GPS coordinates) and then - and only then - apply transformation to 3857 (from a known start).
Does this code and map fit your expectations? (I also cleaned up the get_map call somewhat, as it had mixed Google and Stamen terms; no big deal there)
QUESTION
I am trying to plot species range areas using convex hulls to then calculate the area and create a figure.
There is a well known issue with the 180 degree international dateline that I have been trying to remedy following many examples on SE, e.g:
How to remedy a path that crosses the international dateline with R
This comes close to what I am aiming for but plots in mapview not ggplot2: How to construct/plot convex hulls of polygons from points by factor using sf?
Here is my attempt:
...ANSWER
Answered 2021-Nov-13 at 13:56Please find below a solution to your problem. I used the function st_shift_longitude()
from the package sf
.
Reprex
- Your data (no changes)
QUESTION
I have a spreadsheet with Lat-Lon info of 14 regions in the Czech Republic (file here). I am trying to plot a map and put bubbles for the active cases in each of the regions. The lat-lon coords are for capital cities from each region.
...ANSWER
Answered 2021-Sep-19 at 19:59There is no need to convert your data to a sf
object. You could simply add your data to your map via a geom_point. To get bubbles map your column with the active cases on the size
aesthetic:
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