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Questions tagged [ggplot2]

Use this tag when referring to the R package for high level data visualization and mapping.

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0answers
60 views

ggplot with island (“Alaska problem”)

The data for this example can be found here: https://github.com/davidbaniadam/maps The problem is essentially the same with Alaska and mainland USA, i.e. I want the size of Alaska to be correct in ...
2
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0answers
38 views

Union anti-meridian “multipolygons” after re-centering world map

My goal is to create a world map (using ggplot2) with a Pacific perspective. I have managed to re-center the map, by following this solution. Code below: # world country layer sppolys <-...
-1
votes
1answer
166 views

Reorder legend in ggplot object [closed]

I met some trouble when dealing with the order of ggplot legend. I plotted three lines in one graph, and I tried to use 'scale_colour_mannual' to change the order as the line from top to bottom, but ...
0
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0answers
20 views

Polygon boundary is not properly connected in R

I have two points sets, when plotted using geom_point, they look like: What I want to do is draw a polygon using these two datasets, and I expect to get a ring-shape polygon. However, when I use ...
2
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0answers
49 views

Assign different colours to intersection between two polygons and difference area

I am quite new to GIS using R. I have two sets of data, upon which I could create two polygons like this: What I want to do is colour the common area (inner 'circle') and the space between borders. ...
1
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1answer
42 views

Splitting an administrative region into given number of parts

I have the following plot. I want to divide the administrative region into given number (say 20) equal parts. library(maps) data(world.cities) Pakistan <- data.frame(map("world", "Pakistan", ...
1
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1answer
41 views

Order features in a spatialpolygonsdataframe in ggplot2

I have a spatialpolygonsdataframe with many overlapping features. I want to create a map in which the smaller features are displayed on top of the larger ones so that the small ones aren't fully ...
0
votes
1answer
64 views

Plotting Geographical Grid from Long/Lat Coordinates in R

I have a file of coordinates (Long/Lat) that should enable me to plot a series of 10km grid squares covering the UK. However, for each grid square I have five sets of coordinates by way of plotting ...
1
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1answer
33 views

Error in mapping connections with great circles [closed]

I am fairly new to R and to map plotting. I am trying to overlay some network information on a world map. I loaded a shapefile from Natural Earth as a large SpatialPolygonsDataFrame via readOGR. I ...
-1
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1answer
75 views

Dealing with Islands with sf objects and the tmap package [closed]

I have the bounderies for the municipalities in the "capital region" of Denmark. The acctual map looks like this: The yellow island is the fourth row in my sf object. I am trying to folllow the ...
13
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2answers
457 views

How to create a map of Denmark with ggmap

I have installed the following two packages: library(ggmap) library(maps) I have found code online to create a world map (see below). How do I zoom the plot on a country level? For example, Denmark. ...
2
votes
1answer
128 views

Binding multiple polygons in R

I have a directory that contains around 700 .shp files. I want to create a map in R that displays all of them. The easiest way i could think to do this was to bind them all together and then use ...
1
vote
1answer
216 views

Simplifying a SpatialPointsDataFrame in ggplot world

I've been working on a map showing lines running across Europe. Each line is coming from a GPX file, parsed in like so: spdf <- readOGR("data/file.gpx", layer = "track_points") Now, if I plot the ...
1
vote
1answer
570 views

Setting fill to a variable based on data within SpatialPolygonsDataFrame?

I'm currently on the cusp of getting done what I want to get done - but having a slight problem with referring to my data from within R's sp SpatialPolygonDataFrame object. The issue is how ggplot2 ...
1
vote
1answer
70 views

Using R to create a choropleth generated from lat/lon lists - with data generated internally

a friend referred me here as opposed to the regular Stack Overflow site, as this community maybe better able to help! My issue is largely with the syntax and framework of ggmap,ggplot, and the sp ...
0
votes
1answer
124 views

Stacked area graph in ggplot2 is empty [closed]

I am trying to make a stacked area graph in ggplot2: Zooplankton<-read.table("clipboard".header=TRUE) TransZoop Zoop DensZoop 0 Copepoda 0.066 0 Nauplii 0.425 0 Cladocera 0.199 0 ...
1
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0answers
112 views

R colored raster from QGIS to ggplot or tmap

I am fairly new in doing GIS work in R, but I thought this would be a nice situation to get my feet wet. Here is the situation: I need to create multiple plots with the same background, the same ...
0
votes
1answer
3k views

How to make customized radar chart in R? [closed]

I am a beginner in R language and trying to make this picture. I tried radar. I tried using radarchart (radarchart(data)) but I do not know how to modify the picture. Here is my data: A B ...
1
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0answers
149 views

could not find function “merge_eurostat_geodata”

Just a couple of codes with the same error at the time of merge data: FIRST CODE: library(eurostat) library(dplyr) library(ggplot2) library(stringr) fer <- search_eurostat("fertility") ...
2
votes
1answer
485 views

Overlay shapefile on multiband raster using ggRGB and ggplot2 in R

I am trying to use ggplot2 to map a polygon feature class over a raster brick (created from multiple Landsat band images). I'm able to map the polygons and the raster separately, but when I try to ...
2
votes
2answers
430 views

Same colour palettes for two different maps in ggplot2

I am constructing two ion concentration maps in the UK using ggplot2. The dataset used for mapping are lzn.kriged1 and lzn.kriged2 which basically has the same structure: > str(lzn.kriged1) Formal ...
2
votes
0answers
152 views

Plotting gam spatial estimates over map?

I have imported Italy map with the following code: library(ggplot2) library(mgcv) library(ggmap) Country <- "Italy" Get_Map_Country <- get_map( location = Country , zoom = 6 ,...
1
vote
1answer
562 views

symbols for different polygon layers in ggplot2

I'm trying to plot the boundary of different spatialPolygonsDataFrames in ggplot2 or in rasterVis gplot(), but I just can't find the way, they tend to overwrite the previous one; this is something ...
3
votes
0answers
36 views

smearing in Linux, but not in Windows

I must have a Linux library out of wack since the following image has "smears" on the colors. Is there a better term? On my Windows 7 RStudio it works fine. this image is from a Ubuntu 16.04 LTS ...
3
votes
1answer
884 views

Ggplot2 map with colored background and coord_map()

I'm trying to plot some cities stored in my rda file naobrazokSR.rda on a map from GADM while having a background of the map in color #2C3E4F. Without using the coord_map() this works as intended but ...
3
votes
1answer
199 views

fit two sf polygons seamlessly

Copied from my SO question The problem Suppose we have two shapefiles that should border seamlessly. Only, they don't. Is there a way to force them to stick to one another without gaps? The ...
0
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2answers
361 views

ggplot2 adding extra polygons

So, I'm working with a dataset of polygons generated at different levels of sensitivity to error from a citizen science project. I have been trying to visualize how my sensitivity threshold changes ...
0
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2answers
1k views

raster::plot() plotting raster too small- is there an alternative on ggplot?

I am trying to plot this raster on R. The object is quite big, but when plotting it using the raster::plot() function, I obtain a very tiny image, as attached. The code I use to produce it is the ...
2
votes
1answer
480 views

Convert all rasters in a rasterstack to polygons

I need to convert all rasters in a RasterStack to polygons and give the polygons names according to its respective raster. library(raster) ## r is a single raster rpolygon <- rasterToPolygons(r, ...
1
vote
2answers
604 views

Unable to Export Kriging Prediction Map

I have performed Kriging using the autoKrige function, that is part of the automap package in R. I obtained this as my output I have realized that maybe the reason why I can not export the ...
0
votes
1answer
929 views

Problems in producing animation GIF files in R

I am trying to produce a GIF file for my maps in R using gganimate but errors show up. devtools::install_github("dgrtwo/gganimate") library(ggplot2) data(sp6, package = 'aqp') p <- ggplot(sp6, ...
3
votes
2answers
4k views

How to plot gridded map from lat-lon and fill values in R?

I want to plot a spatial map in which each pixel is of 0.25 degree spatial resolution in R. For this I have fill values at 0.25 degree grid spacing. Below is the data ----------------------- ...
1
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1answer
106 views

How do I manage to get my swedish letters

I am trying to do the map in ´ggplot2´ in ´R´. I use this function from rgdal package: mapa <- readOGR(dsn=path.expand("C:/~/SWE_adm_shp"),layer="SWE_adm2") than I do: fortify(mapa) ggplot(mapa,...
1
vote
2answers
930 views

How to correctly plot SpatialPolygonDataFrames in ggplot and substract them in R

I have a landuse shapefile (contains data and script) that plots differently in Base and ggplot, the reason for which remains a myster after countless hours of playing with it. I read in both ...
1
vote
1answer
620 views

Remove points outside a map with ggplot2

My dataset consist in a converted raster dataframe, with for each point a long/lat, a categorical value and a numerical value are associated with. It can be downloaded here. The code hereafter ...
2
votes
3answers
1k views

Adding a legend to points in the tmap package

I am trying to create a map with several points (about 20), where each point will be represented by a number, and where a legend will have these numbers and names of my points. Is it possible to do ...
6
votes
2answers
1k views

Create a 3D topographic map with locations marked on the map using R

I am currently trying to create an interactive 3D surface plot using plotly in R. My dataset includes a matrix of Latitude and Longitude and I have a DEM for the region I would like to make this ...
0
votes
1answer
84 views

Combining postal codes into sales territories by value using R and ggplot2?

I have the shapefile for Canadian census subdivisions. For each subdivision I calculated some value (someValue). I want to combine census subdivisions into territories in such a way that territories ...
3
votes
1answer
297 views

How to measure the area of a hexagonal bin generated using ggplot2?

I've generated a number of plots using the geom_hex and stat_summary_hex functions in ggplot2, and I've adjusted the number of bins until the plot "looked right." That said, I'd like to know the area ...
2
votes
2answers
7k views

Keep customized colors with geom_polygon()

I have plotted a map of France with customized colors with map(): map(database="france", fill=TRUE, col=color) Results: (don't mind the two errors) and then I want to put this map with a ...
5
votes
1answer
1k views

Creating an sf object from the maps package

I am trying to use data from the maps package in an sf workflow. I'm not sure if I have the operation correct (see below). It seems to work until state 20 (massachusetts). What am I doing wrong? Maybe ...
3
votes
1answer
273 views

R error fortifying dataframe from shapefile

From a set of 420 files (monthly) containing three columns (longitude, latitude, cluster) I have extracted shapefiles defined by cluster value. To do this I have read some posts in StackOverflow and ...
0
votes
1answer
674 views

Save a rasterPCA plot as a raster file in R [closed]

Looking to the tutorial in http://bleutner.github.io/RStoolbox/rstbx-docu/rasterPCA.html, in which they show how to do a Principal Component Analysis on raster data, I was wandering whether is it ...
6
votes
1answer
4k views

How to create a crisp topographical/terrain map with ggplot2?

I am trying to produce a high quality vector based map (in greyshades) in order to report locations. I tried this by getting maps from GADM and SRTM to make a raster as a base for plotting in ...
0
votes
1answer
2k views

simple plotting of (latitude, longitude) points on a global map

I have a dataframe like the following: country <- c('US', 'CA','TW') city <- c('Atlanta','Halifax','Taipei') lat <- c(33.8004, 44.6500, 25.0392 ) lon <- c( -84.3865,-63.6000,121.5250 ) ...
1
vote
0answers
48 views

How to group different values of a variable so that they plot with same shape?

I have a table with two columns of number X and Y, and one column of strings called crystals. crystals A A B C B D B C Using ggplot2, how can I make a scatter plot of X versus Y with two ...
1
vote
1answer
872 views

How to spatially smooth data on a map?

I've been struggling a lot lately to produce a map in R with the ggplot2 package. So far this is the map I managed to achieve (where each little plygon stands for a city) : The data used for this ...
2
votes
1answer
2k views

Plotting polygon on Google map?

I have a dataset with points in NYC. I extract the bounding box (max and min lat/lon) and plot it on a map. It works for the basemap stamen watercolor, but not for google's. Why? Here is the code to ...
2
votes
1answer
444 views

Cannot fortify rworldmap's default world map with a region argument

I'm using the default world map from rworldmaps as a background layer for a bunch of plots done with ggplot2. In order to do this I have to "fortify" the object returned by getMap() - this converts ...
1
vote
1answer
962 views

Plotting square grids on a map and extracting each grid information using R [closed]

I have a data set which looks like this LATITUDE LONGITUDE VALUES 28.26734 76.82973 -56.7879 28.26644 76.82972 -58.22462 28.26508 76.82969 -58.4211 28.26778 76.83076 -55.75333 28.26733 76.83075 -...