The scatterplot is most useful for displaying the relationship between two continuous variables. position are : “left”,“top”, “right”, “bottom”. Example: Change Legend Labels in ggplot2. See more linked questions. Adding legend for geom_line to ggplot. baseplot + geom_hline(aes(yintercept = expected,linetype = "expected"),show_guide = TRUE) The key in most cases, I think, is adding show_guide = TRUE. 4. factor(seq_along(vec2))), stat='identity') +. 040604 51. If you instead want a colour to be assigned to the value based on a variable name, you need to specify it within the aes() argument. the geom_errorbar layer is using linetype='solid' which is over-drawing or over-writing (I am not sure which) the linetype from the geom_line layer; the size of the lines in the legend is so big that the linetype cannot be seen; To fix (1), use show. However, a better way to get a ggplot is to merge your two values "Time" and "Timesec" into a single dataframe and reshape your dataframe into a longer format. – PatrickT Commented Sep 30, 2017 at 8:51 Nov 13, 2018 · Change the legend title and text labels; Modify the legend position. I am obviously missing a very simple argument in theme() but I cannot figure out what it is. The Aug 7, 2013 · The four lines on the plot are displayed in different linetypes, however the legend does not show these different linetypes only the different colours. In your plot code, you are specifying a list of color values, but ggplot2 has no idea what that should be linked to in your data. The trick is to convert your data from wide format (where every type of data has its own column) to long format (where there is a column indicating the data type and a column giving the corresponding value). In the below case, we use the breaks argument to ensure that the labels in legend represent two levels (4, 8) of the mapped variable. män Jun 13, 2019 · the common legend only shows the items from the first ggplot argument, in this case the A line. It can be used to compare one continuous and one categorical variable, or two categorical variables, but a variation like geom_jitter(), geom_count(), or geom_bin_2d() is usually more appropriate. As pointed out by @Ben, you should pass the color into an aes in order to get the legend being displayed. 7. Also, try making your x variable a factor, so it maps discrete the bars to discrete colours rather than a gradient. 48 3509 73. You can get to that using tidyr::gather . Oct 27, 2020 · I'm having difficulty modifying the legends on my ggplot to plot to my liking. legend logical. 2) Example: Harmonizing Legend with shape & color Arguments. For your data: geom_line() +. I have almost all but figured out how to label the lines and color them, but I can't seem to set the linetype. 131 40. In ggplot, you get a legend by mapping a data column to, say, color inside aes. 5 2 2827 4 1902 Delägare. 0 1 408 5 1903 Delägare. It’s time to dive into the R syntax: Jun 14, 2021 · You can use the following syntax to change the legend labels in ggplot2: p + scale_fill_discrete(labels=c(' label1 ', ' label2 ', ' label3 ', )) The following example shows how to use this syntax in practice. The ggplot2 book says on p 112 "The position and justification of legends are controlled by the theme setting legend. frame(x = c(1,2,NA), y = c(1,1,NA), a = c("A","B",NA)) aes is telling ggplot what data to show, not how to format it. This way you can have a variable denoting color, inside your aes call, which will produce the legend. position argument will be assigned as a top. We’ll show examples of how to move the legend to the bottom or to the top side of the plot. Loading the grid library is important. The position of the legend can be changed using the function theme () as follow : p + theme(legend. Learned here: Legend disappaers when plotting in R. . position="top") p + theme(legend. 3. Hide All Legends in ggplot2 (Example 1) Remove One Specific Legend with guides command (Example 2a) Remove One Specific Legend with legend. Following this post: Construct a manual legend for a complicated plot, I constructed a manual legend for my plot. I'm plotting the following data (stored as data. Since colour is not an aesthetic in your case, there is no legend. Ok, so let's try to specify a colour: ggplot() +. I have looked through a lot of forum posts, but everything I try seem to be commands that are now updated and named something else. This is useful for making the legend more readable or for creating certain Feb 5, 2019 · ggplot2 works better with "long" form: one column for variables, another for their values. off (Example 2b) Further Resources for the Formatting of ggplot2 plots. ggplot geom_col legend not showing. user213544. 059428 4 5 Nov 26, 2012 · The "ggplot" way generally likes data to be in "long" format with separate columns to specify each aesthetic. ggplot2 ribbon plot not displaying. May 18, 2013 · The box in the legend is not getting coloured. How can I get a legend to appear on my plot using my own desired colours? 0. The scale_color_discrete() line is there because otherwise the 1-point legend would be on top, not what you had in your desired picture. I have tried everything I can think of without success. A character string indicating the direction of the guide. How to hide chart legend in ggplot2? 3. I set the show_guide=T on the vline elements to force the legend to show, but it does not help. The article is structured as follows: Creating Example Data. Mar 2, 2016 · plotly not showing legend when using ggplot2::geom_line() #476. For example: geom_bar(aes(fill=as. e set scipen() to a number that you are comfortable with. 3. position, and the value can be right, left, top, bottom, none (no legend), or a numeric position". How can I force the 'location' legend to JUST show color, not a shape? Maybe showing location as red and blue rectangles would be ideal. 53 3872 73. Change the legend position. 168995 9 4 1 4. 10417 97. For example, you could add. See more about the cowplot package here & the patchwork package here May 2, 2020 · Hi All I work with ggplot and I have a problem with the legend. I'm sure my code is overly complicated, but it is the only way I have found to achieve the correct visual. Defining and showing legend in ggplot. I know an identical question has been asked earlier. Related. Jan 22, 2022 · R - ggplot, construct manual legend does not show. The content is structured as follows: 1) Example Data, Packages & Basic Plot. See e. We will then specify the plotting region with xlim and ylim. position = “top”, …, complete = FALSE, validate = TRUE) Nov 20, 2014 · How to add a legend in ggplot (not showing up) Ask Question Asked 9 years, 8 months ago. Oct 22, 2016 · Colours can be controlled on an individual layer basis (i. ?par for more on xpd. user distance time 1 1 8. the code: When there are large number of levels in the mapped variable, you may not want the labels in the legend to represent all of them. I have myself successfully used geom_point for this kind of thing before by following hadley's example here (search for 'highest <- subset' to get the relevant Jun 3, 2013 · facet_wrap(~category2) # add a dotted line for expected value. 690000 51. Altogether, your code can be something like that: Mar 23, 2021 · A legend is created in ggplot2 when one or more columns in your dataset are mapped via aes() to one of the aesthetic modifiers (for example, fill, shape, size, color, alpha). e. the colour = XYZ) variable, however, these will not appear in any legend. 81176 365. If you want to have the standard colors in your legend, you could use the hue_pal function from the scales package like this: df = data. The override. -- Reproducible example -- Dec 20, 2015 · how to get combined legend in ggplot2 when I have both geom_line and geom_hline 1 No legend shows up using multiple geom_point and geom_line functions in 1 graph How to show legend without a data frame in ggplot? 6. 074 34. theme (axis. A character string indicating where the legend should be placed relative to the plot panels. Maybe I need to specify the linetypes again in scale_colour_manual()? In this article, I’ll show how to modify the lines and colors of a ggplot2 legend in the R programming language. The keywords are legend. A bubblechart is a scatterplot with a third variable Jul 19, 2018 · Creating legends when aesthetics are constants in ggplot2. Feb 26, 2024 · Legend positions are no longer restricted to just a single side of the plot. Set it to FALSE for any layer you do not want to show up in the legend. By setting the position argument of guides, you can tailor which guides appear where in the plot. Jun 15, 2018 · I wanted to construct a manual legend, using ggplot in R. Let’s jump right to the example. The second geom will include the alpha parameter and suppress the legend. 2,106 3 3 gold badges 29 29 silver badges 55 55 bronze badges. Feb 12, 2012 · I am trying to place a symbol on the lowest point in a certain time series, which I have plotted with ggplot's geom_line. How can I get a common legend to include all of the lines without reformatting the dataframe and using facet? Apr 8, 2021 · All of the geom_ and stat_ layers in ggplot2 take an argument show. key. position="bottom") The allowed values for the arguments legend. R: ggplot2 legend not showing up. 3) Video, Further Resources & Summary. The theme argument in the guide overrides, and is combined with, the plot's theme. position argument of the theme function you can modify its position. Why ggplot2 legend not show in the graph. 2 Missing legend for ggplot. position. (reproducible example at bottom of post) I'm not sure what I'm doing wrong, but the legends do not show. Apr 4, 2016 · The legend does not display correctly or does not show all the values cause it is cut! I would like to get the legend outside of the plot area (at the bottom or right corner). 39168 133511. asked As the question and user3490026's answer are a top search hit, I have made a reproducible example and a brief illustration of the suggestions made so far, together with a solution that explicitly addresses the OP's question. position as an argument. frame object) as ROC-AUC plot using ggplot. Follow edited Jul 2, 2021 at 11:50. ggplot legend - scale_colour_manual not working. You'll need to change this if you want to set a y axis label. legend = FALSE, set their color with scale_color_manual. legend = FALSE. While we're at it, we can use dplyr::mutate to add the x variable: The guide can either be a string (i. But the question involves a somewhat complicated dataset than what I have here and the answer suggests restructuring data and then works with restructured data. Sometimes the powers that be say that's how it has to be. 03261 363. 85 18089 212. In this case, linetype should be interpreted as an aesthetic. 013872 5 3 1 11. In this tutorial you will learn how to add a legend to a plot in base R and how to customize it. Plotly R, MATLAB, Julia, Net Plotly R. Likewise, typing plotting commands into the console produces correct output. 12827 8860. The approach is to plot the geom twice, once without an alpha parameter and outside of the real plotting area. 05660 94. 66494 Neg 23. Legend not changing colors in ggplot2. Viewed 2k times Part of R Language Collective Isn't the simplest general solution to set the penalty that R uses for scientific notation higher? i. Dec 21, 2015 · You can also control the size of the point in the legend with the break you choose. Feb 22, 2023 · Here is one way how we could do it: What we are doing: thanks to @r2evans (one pivot_longer instead of calling twice, and replacing size in geom_line (deprecated in ggplot2 3. Here an example: library (ggplot2) ggplot (mtcars) + geom_line (aes (x=mpg,y=cyl,linetype='2')) + geom_line (aes (x=mpg,y=disp,linetype='3')) + scale_linetype_discrete (name = "Lines Types aes") answered Dec 4, 2013 May 9, 2023 · I am creating a lexis plot for a dataframe with ages 0:80, for years 1900:2020, and values 0:20. I have also found solutions to suppress it, but that hasn't worked for me. legend which defaults to NA. 63529 132230. e. An alternative to geom_text is using geom_label, which adds a border around the values. We would like to show you a description here but the site won’t allow us. Mar 29, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Oct 30, 2014 · If I select the whole script with Ctrl+A, then Run the current line or selection ( Ctrl+Enter ), then the plot does display. Guides that do not have a position set, like the ‘drv’ shape legend below, follow the global theme’s legend. However, the geom_point is not showing up on the plot. Hot Network Questions Within Microsoft Word, how do you continue a page number from a Nov 8, 2022 · The points in the plot are correct, but the legend or guide on the right has all points shown as black. ggplot seems to have 2 overlapping linetypes for the dashed line: one short fat line overtop the skinny dashed line I want. – Nate Lockwood Commented Jun 18, 2019 at 18:24 Mar 10, 2021 · ggplot does not show me the legend. The easiest way to deal with this is to prep your data into the appropriate format with reshape2 package: As you can see by specifying all the colors in values and only the breaks for A and B will remove the NA from the legend. In it, slashes are added and after googling for a quite a while I understand that is a common issue. # The problem is the ggplot guide for Color is all black. I suspect that this is due to the geom_histogram plot showing only one series of data which. Most of the solutions I have found are for barplots (e. 083 110. 84209 9573. May 4, 2015 · Because you didn't map some variable to an aesthetic, it won't create a legend. Viewed 467 times A theme object to style the guide individually or differently from the plot's theme settings. Apr 7, 2017 · I am trying to make a plot showing the cumulative mortality across different feeding levels and temperatures. In general, if you want to map an aesthetic to a variable and get a legend in ggplot2 you do it inside aes (). position setting. It is FALSE by default for this geom, which may or may not be intuitive. ggplot2 not showing line in geom_point's (a) in ggplot2 3. I have already tried to change the position in ggplot: legend. com May 15, 2015 · Legends are drawn for aesthetics. the ggplot cookbook). Mar 26, 2022 · R: linetype and color manual not showing in ggplot legend. Missing legend for ggplot. 6. 3) Video & Further Resources. If your axis maximum on charts is likely to be 100 000, setting scipen(200000) will ensure that R (and ggplot) will use standard notation for all numbers below 200000 and there will be no requirement to add any lines to the ggplot Feb 14, 2013 · I have a df: head(hej3) Year variable N Sum Mean sd Variance Median Min Max 1 1901 Delägare. 92 19783 215. Create a second, almost identical, geom_smooth layer but this time with a white fill, not mapped to a legend: The code: p=ggplot(df, aes(x=x, y=y)) +. Legend not changing colors in Nov 25, 2014 · r; ggplot2; legend; Share. Jul 5, 2012 · To show the differences among the states, it can make a certain amount of sense to plot data, for example age-standardized breast cancer mortality by year, from each state. In the default setting of ggplot2, the legend is placed on the right of the plot. Aug 28, 2018 · The idea is to create each plot individually (color, fill & size) then extract their legends and combine them in a desired way together with the main plot. Else the 'unit' is not recognized by R. By design ggplot has a strong link between what you put in aes (or not) and the resulting appearance of the legend. I want to use geom_abline to create diagonal lines through the lower left and upper right corners of the boxes created by vertical and horizontal lines at increments of 10. If you set this the legend will display the letter “a” inside the boxes, so we have overridden this behavior with show. width parameter in the ggplot2 library package. The dashed lines in the plot are not dashed in the legend, even though I defined their style with the command: scale_linetype_manual Suspicious is also, … Dec 10, 2015 · I'm struggling getting the legends for two vline elements showing on an histogram. Suppose we create the following grouped boxplot in ggplot2: See full list on cookbook-r. Jul 19, 2018 · The problem is that ggplot is looking for the colour bars, which is not a valid colour name. 1 Legend doesn't appear in ggplot Mar 24, 2021 · The following examples show how to use this syntax in practice with the built-in iris You can directly tell ggplot2 to place the legend on the “top”, “right . ggplot does not show me the legend. Here's a code example: # to different 'Group' (A or B), outline is set at black. 1. then pass new_scale_color function, plot the 2017 line, and set the appropriate attribute for this color. 2. Suppose we create the following grouped barplot using ggplot2: Jul 28, 2021 · Placing the legend position at the top. Syntax : theme( legend. Legend doesn't appear in ggplot. Change ggplot2 Legend Key Size. 559737 4 2 1 5. 0) with linewidth: margin = margin(r = 30, unit = "pt"))) To add 30pt of space to the left of each legend label (may be useful for a vertical legend): margin = margin(l = 30, unit = "pt"))) for a ggplot2 object p. 5 1 414 3 1902 Delägare. Lrjzon October 30, 2019, 8:26pm 1. Here, we will change the position of the legend from side to top. As a result, the plot only shows the first 4 legend labels and uses the first 4 colors. Note to self: if you have a geom_linerange() and the legend is showing a cross instead of a line, insert show. Modified 3 years, 3 months ago. ) Jun 29, 2021 · R - ggplot, construct manual legend does not show. legend" (when R complained) and adding it to each of my 'geom_vlines'. Your data frame is currently in "wide" format. How to suppress legends with ggplot. You’ll will also learn how to put the legend inside the plot. A plot with 16 lines is not always a good choice, and I don't want to open up a discussion about that. The most common answer out on the internet is appointing a color or Oct 16, 2020 · The following examples show how to use these arguments in practice. Sep 2, 2019 · So this theme has no axis titles at all. However, the abline is not showing up. guide_colourbar() or guide_legend()) specifying additional arguments. I have managed to get the graph to look correct, but the legend does not match. The post looks as follows: 1) Example Data, Packages & Default Plot. But the problem persists even with simple data as I have below and I can't solve it. in this case colour aesthetic) mapped to a variable in your data, in which case, you need to instruct how to to represent that specific mapping. In your plot, you've hard-coded the color for each line outside of aes. The point geom is used to create scatterplots. To control the color palette used, I added scale_color_manual , similar to how you were already using scale_shape_manual to manually adjust formatting Aug 30, 2021 · ggplot2 legend not showing up. This xpd parameter enables plotting outside the plot region. Dummy data below: Oct 30, 2019 · R: Legend not showing in ggplotly map. text and margin. In such cases, we can use the breaks argument and specify the labels to be used. aes argument in guide_legend() allows the user to change only the legend appearance without affecting the rest of the plot. This tutorial shows how to remove legends in plots of the R ggplot2 package. This requires you to transform your data prior to plotting it using a package like tidyr or reshape2. 4. library (tidyverse) ggplot (pivot_longer (d, -1), aes (iteration, value, colour = name)) + geom_line () To select the colors you want, you can use scale_color_manual. Apr 28, 2020 · Briefly, you can plot first lines for 2015 and 2016 with the option show. We will do this using the theme() function and providing legend. Is there a way to plot this figure that forces ggplot to show all eight legend labels and fix the colors so that cat1 values are always red, cat2 values are always blue, etc. The legend should have 5 lines, four derived from the data and one created from outside the data. geom_sf(aes(fill = "US State borders"), nc, show. However, making use of the legend. legend=FALSE preserves the overall legend and (b) I am surprised at how difficult finding this was – learner Commented May 10, 2022 at 18:16 Jan 18, 2019 · Your linetypes not showing up in the legend is some combination of. Dec 10, 2012 · R ggplot2 could not add legend to graph. 97400 Neg 1. Aug 9, 2021 · Try to add xpd=TRUE to legend: By default, the legend is cut off by the plotting region. The legend. I have made a map with ggplot which shows points on the map with different sizes based on the Freq value in my dataframe: Longitude Latitude Result Freq. Legends are produced when you have an aesthetic (i. FALSE never includes, and TRUE always includes. It can also be a named logical vector to finely select the aesthetics to display. legend=FALSE inside the geom_linerange(). Mar 30, 2021 · Legend does not show up in ggplot2. A legend of a plot helps to understand which series or groups corresponds to each bar, line, box or observations, based on its type, color or both. Closed p #note: ggplot2 puts a legend here ggplotly(p) #does not show the legend Feb 25, 2015 · The problem is how to deal with the legend. Jul 24, 2014 · The problem is that you can't map your color into aes because you've got two separete sets of data. I want to display each data in unique linetype and color and arrange them into a legend inside the plot, so I referenced this thread, but my code (at below) doesn't seem to work. Add Legend In ggplot2 after adding geom_area. Hot Network Questions Formal written form for a 2x something? join files/devices in linear Combine Multiple ggplot2 Legends in R (Example) In this R tutorial you’ll learn how to create only a single ggplot2 legend. position="bottom" no result at all then i have tried code from plotly website: I'm having the following data set in R which I want to plot in a scatterplot. kvinnor. Adding labels. 0. For example: library (ggplot2) p = ggplot (mtcars, aes (wt, mpg)) p + geom_point () Will only produce output if pasted into console, not if sourced. Possible values are "right" (default), "top", "left", "bottom" and "none". The R legend() function The legend function allows you to add a legend to a plot in base R. Reverse legend order. Since your linetype's are not in the aes , they are not showed in the legend. The problem Oct 23, 2014 · In this example, the 'location' legend is explaining the colors by showing colored circles (but circles also mean cat, which is apparently confusing). Dec 9, 2019 · I would like the legend to simply show a line in the same colour as shown in the map and give a name for that layer. By default, the automatic legend of a ggplot2 chart is displayed on the right of the plot. direction. "colorbar" or "legend"), or a call to a guide function (i. Jun 6, 2016 · Didn't work for me even after I changed "show_guide" to "show. 625 111. legend=FALSE in geom_errobar In ggplot2, aesthetics and their scale_*() functions change both the plot appearance and the plot legend appearance simultaneously. legend = "line") However, this now changes the colour of the plotted layer. Dec 11, 2022 · show. män. Dec 14, 2020 · R - ggplot, construct manual legend does not show. ggplot2 really likes long data (key-value pairs) better than wide (many columns). Modified 9 years, 8 months ago. Below I have three plots showing the issue. ggplot legend does not appear. What is wrong here ? r; plot; legend; Share. 0 ggplot legend does not appear. Jun 10, 2022 · The modern way to do this is with pivot_longer from tidyr, which is part of the tidyverse. (I can see the rationale. Ask Question Asked 3 years, 3 months ago. title = element_text ()) + ylab ('Something') to your graph, but then you'll get an x axis label, as well. I can add a legend, using this workaround: ggplot() +. – Jun 7, 2011 · To get the legend background to have a white fill, you have to trick ggplot as follows: Create a geom_smooth layer with fill mapped to a colour. However, there are situations where you might want to set an Mar 2, 2012 · I'm not that sophisticated, but here's one approach that should give you the desired results. # The guide/legend doesn't reflect the point fill color based on ID. Dec 4, 2013 · The rule is simple: each aes is key in the legend. g. Customizing legends may be slightly hackish. But not sure how to force the legend to show first place. arrange. R ggplot won't show legend colors. 0 5 2771 2 1901 Delägare. You can change the numeric value of the width. Mar 1, 2020 · 1. If you want to set an aesthetic to a constant value, like making all your points purple, you do it outside aes (). The correct fill is not showing (the circles are all black atm, so I can't tel which group the points refer to) The position is incorrect (position = "bottom" is not working) Ideally, I would like the legends to use squares (the same as the shape used in my plot Mar 5, 2015 · Width of the Legend is changed using legend. You can also change theme elements to suit your taste: I have two ggplots which I align horizontally with grid. geom_point needs both a color and shape aes argument so that it can combine them and later tell the legend how it has done so. An alternative would be to use. Instead, stack your model data frames into a single data frame with a new column marking the model each row of data refers to, and map color to May 6, 2020 · ggplot2 legend not showing up. Value A list containing the mapping between scale and guide. 2) Example: Manually Adjust Line Type & Color in ggplot2 Legend. [Note about edit: When this answer was first posted, there was a bug. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. 5 show. An idea is to bind them, then to apply the "melt" function of package reshape2 so you create a dummy categorical variable that you can pass into aes. mb dn lk vg du em rb ql nt im