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Questions tagged [stat-density2d]

35 questions
5
votes
1 answer

stat_density2d - What does the legend mean?

I have a map done in R with stat_density2d. This is the code: ggplot(data, aes(x=Lon, y=Lat)) + stat_density2d(aes(fill = ..level..), alpha=0.5, geom="polygon",show.legend=FALSE)+ geom_point(colour="red")+ geom_path(data=map.df,aes(x=long,…
Nicholas
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Why does stat_density2d not always depict densities correctly?

I am currently working on a project, and so far I have extracted data. Im in the works of visualising some of it. Thats where the issue starts. I have an issue with ggmap density-plotting, especially in areas with smaller amounts of points. I can…
R. Alexander
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How do I stop the stat_density2d in R from plotting on the left-hand side of my boundary line?

I have created a code to make a scatter plot combined with a density plot. For several samples, I have set a boundary at some value. The scatter plot (geom_point) does not plot on the left-hand side of the boundary, whereas the density plot…
LiWa
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1 answer

How to modify ggplot2 stat_density_2d contour plot density scaling?

I'm working with a two column table that I am trying to make a density contour plot out of. "HiChIP_VillusvsCrypt" is the x axis and "RNAseq_VillusvsCrypt" is the y axis. If you see in this attached image, there is a legend with the density scaling…
Rohit
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1 answer

Adding a 3rd Variable to a stat_density_2d Plot

Below is code and a dataset of a stat_density_2d plot I created in R. library(ggplot2) topKzone <- 3.5 botKzone <- 1.6 inKzone <- -0.95 outKzone <- 0.95 kZone <- data.frame( x=c(inKzone, inKzone, outKzone, outKzone, inKzone), y=c(botKzone,…
Nate Walker
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ggplot2 stat_density_2d: how to fix polygon errors at the dataset bounding box edges?

I am analysing my sfc_POINT dataset using ggplot2::stat_density_2d. I seems, though, that the resulting polygons get all wonky at the edge of the dataset bounding box. For whatever reason, ggplot2 can't seem to draw polygons further than the source…
Vesanen
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Density-2d plot on top of a map with ggmap

I want to produce a 2d-density plot based on spatial point data. In the background I want to show an open map (e.g. stamen terrain). Besides I want to plot the borders of Austria. Both datasets (data points and border) are shapefiles in EPSG 4326. I…
Chris
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3 answers

How can I delete the background in stat_density_2d?

I am trying to make density maps in R using the function stat_density_2d, but I would like to remove the background color for which the density is null. I tried changing the limits for the density, but when moving the limits from [0,5] to [0.1, 5],…
Khadija
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How can I decide on number of bins in geom plots

I have a dataset with close to a million records (coordinates). While plotting that in a map using R, when I use 'geom_point' to plot the data, everything works fine. Then When I plot a density plot using 'stat_density2d', I hardly get any values…
Visahan
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Plot only top layers of ggplot stat_density_2d/geom_density_2d in R

I'm trying to generate a contour plot with ggplot in R, but keeping only the top layers of the plot. So for instance, with the following toy data: df <- data.frame(x=rnorm(2000, 10, 3), y=rnorm(2000, 10, 3)) stat_density_plot <- ggplot(df, aes(x,…
Andrea
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Why is ggplot cropping the density estimation laid over my map?

I'm trying to overlay geocoded citizen complaints onto a map of Chicago using ggplot. Due to overplotting, it seems like stat_density2d is a good visualization option. I am able to generate the image, but for some reason the edge of the density plot…
Alonninos
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R: how to combine color gradient on y-axis with density map?

Is it possible to combine a density 2D map, showing color intensity depending on the density of points values, with a color gradient related to y-axis? In other words on the following example, is it possible to choose a color_gradient from red for…
user15777046
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Adding another variable information or adding weight into stat_density_2d

Below is a simple code to produce stat_density_2d plot of X~Y. plot_data <- data.frame(X = c(rnorm(300, 3, 2.5), rnorm(150, 7, 2)), Y = c(rnorm(300, 6, 2.5), rnorm(150, 2, 2)), Z = c(rnorm(300, 60, 5), rnorm(150, 40,…
user236321
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ggplot2: identity of points in stat_density2d contours/bins

I am trying to ascertain the identity of the data points in the top two (i.e. innermost) contours, as given by stat_density2d(). How can I retrieve the data point ids? For example: set.seed(1235) dat <-…
brian
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1 answer

producing heat map over Geo locations in R

I want to produce heat map based on some geo-location data on top of the US map using r. The following plot is created over the US map where I used geom_polygon() and geom_point(). How can I convert this to a heat map to get something as follows…
temp
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