I would like to know how to plot latitude and longitude readings in R.
Drive Route:
I want something like the above image. The route is for a street in Nigeria and the lat/long readings were obtained from a GPS. The plot was done with MapInfo but I would appreciate if someone can show me how it is done in R. I am still a newbie in R.
I agree with Andy on doing some more research before asking questions, but to get you started I would suggest you have a look at the ggplot2 and ggmap package combination. Which can be used to set up maps and plot gps locations on these maps.
I mainly use it to plot sample locations, but I guess you could also use it to plot routes/lines.
Related
I am new to stack overflow and r studio in general so please forgive me for any mistakes I might make when trying to ask my question.
I am trying to create a world map that displays my countries by their transaction value. This is what my data looks like:
I have 86 different countries total.
This is what I have attempted so far:
And I got this:
Clearly, this is not a good representation of the data because the United States is an outlier. I am not sure how to properly construct a map colored by my values that I want, and to make it actually useful. I do not care what map function or package to use (like ggplot or country_choropleth). I am just stuck on how to deal with the outlier in the coloring scheme and what other options I can do to make my map of 86 countries look nice. Thank you ahead of time for the help.
I have gone through few tutorials and answers here in stackoverflow such as:
Overlap image plot on a Google Map background in R or
Plotting contours on an irregular grid or Geographical heat map of a custom property in R with ggmap or How to overlay global map on filled contour in R language or https://blog.dominodatalab.com/geographic-visualization-with-rs-ggmaps/
They either don't serve my purpose or consider the density of the data to create the image.
I am looking for a way to plot contour on a map of a certain data, and would expect the image to look something like this:
or something like this taken from https://dsparks.wordpress.com/2012/07/18/mapping-public-opinion-a-tutorial/:
I have a data here that gives a contour plot like this in plot_ly but i want this over the map given by latitudes and longitudes.
Please guide me on how this can be done. Any links to potential answers or codes would be helpful.
Ok I did some digging and figured that to plot the data -which in this case are point values randomly distributed across the Latitude and Longitude, one has to make it continuous instead of the discreetly distributed one. To do this I interpolated the data to fill in the gaps, this method is given in Plotting contours on an irregular grid and then take it from there. Now the interpolation here is done using a linear regression, one can use other methods such as IDW, Kriging, Nearest Neighbourhood etc for which R-packages are easily available. These methods are widely used in climatology and topographic analysis. To read more about interpolation methods see this paper.
I have a csv file containing latitude, longitude and temperature for san joaquin valley. I want to plot the latitude and longitude on the y and x axes respectively.I want to use the google base map. The temperature at a particular latitude and longitude should be plotted as a surface map like shown in the image below.
Please guide me to achieve the output as shown in the picture.
http://i.stack.imgur.com/r8loG.png
Thank you so much.
You can very easily use ggvis to make the type of map that you want. You will need more than just lat and lon to make it happen if you are looking ot have some kind of color transition based on a prevalence of some kind. It may be in another column and tied to your labeling method.
Here is a solid site to help you get started.
ggvis mapping
Work through the examples to figure out what is happening beneath the code before you dive right into your own unless you are very familiar with R and the ggvis environment.
Without a starting code base, no one is going to be able to help you more than this...get started and then ask more specific questions.
Hi folks: could anyone give me some hints about plotting timezones grid using polygons over the world map in R? I use maps to get the world layout, but where to get coordinates of timezones polygons?
Ultimately, I would love to get something like this, coloring timezones according to some values from my analyses. Thank you!
If your question is just where to get time zone shapefiles for plotting, then you can get some from http://efele.net/maps/tz/world/.
I read ggmap's documentation and while the density/contour maps look cool, I was wondering whether someone has replicated this example. It creates clusters of points on geographic locations. I have many points to plot on the whole US map, so many that it hides other important information. I am using ggplot and maps to plot these maps. I would appreciate if someone has any examples of cluster plots as given in this example or this example