38 how to label specific points in ggplot2

Text annotations in ggplot2 with geom_text, geom_label ... - R CHARTS Text annotations in ggplot2. The geom_text and geom_label functions allows adding text or labels, respectively, to plots created with ggplot2. You can add some annotations to some coordinates or label data points. In this guide we are going to use the following example plot. How To Highlight Select Data Points with ggplot2 in R? Here we will see an example of highlighting specific data points in a plot. Let us first load the packages needed, we will mainly be using dplyr and ggplot2 here. library(dplyr) library(ggplot2) theme_set(theme_bw(base_size = 16)) Let us use the gapminder data from Carpentries website to make plots and highlight data points.

How to Annotate a Specific Cluster or Group in ggplot2 Sometimes we might want the group of interest to standout by coloring only that group. We can do that by adding two geom_point() layers. One with all the data points, but no color. And the second geom_point() layer with data containing the group of interest, but with aes() function to color the group.

How to label specific points in ggplot2

ggplot2 axis ticks : A guide to customize tick marks and labels # Set tick marks on y axis # a tick mark is shown on every 5 p + scale_y_continuous (breaks=seq (0,40,5)) # Tick marks can be spaced randomly p + scale_y_continuous (breaks=c (5,7.5, 20, 25)) # Remove tick mark labels and gridlines p + scale_y_continuous (breaks=NULL) Format the text of tick mark labels How to Label Points on a Scatterplot in R (With Examples) This tutorial provides an example of how to label the points on a scatterplot in both base R and ggplot2. Example 1: Label Scatterplot Points in Base R. To add labels to scatterplot points in base R you can use the text() function, which uses the following syntax: text(x, y, labels, …) x: The x-coordinate of the labels; y: The y-coordinate of the labels A Quick How-to on Labelling Bar Graphs in ggplot2 How to Position the Percentage Labels Inside the Bars. The geom_text() function comes with arguments that help you to align and position text labels:. hjust and vjust: the horizontal and vertical justification to align text.; nudge_x and nudge_y: the horizontal and vertical adjustment to offset text from points.; To put the labels inside, we first need to right-align the labels with hjust = 1.

How to label specific points in ggplot2. How to create ggplot labels in R | InfoWorld However, it's currently impossible to know which points represent what counties. ggplot's geom_text () function adds labels to all the points: ma_graph + geom_text(aes(label = Place)) Sharon... How to Add Labels to Select Points with ggrepel? We also specify which variable we want to add as annotation or label using the argument "label". We have also specified red color for the text labels. We start as penguins_df %>% ggplot(aes(x=culmen_length_mm, y=flipper_length_mm))+ geom_point()+ geom_text_repel(data=df, aes(x=culmen_length_mm, Add Label to Straight Line in ggplot2 Plot in R (2 Examples) Next, we can use the geom_hline and geom_text functions to add a straight line with a text label to our ggplot2 graphic: ggp + # Add horizontal line & label geom_hline ( aes ( yintercept = h_line)) + geom_text ( aes (0, h_line, label = h_line, vjust = - 1)) How to Annotate a Specific Cluster or Group in ggplot2 in R? The points in the data frame can be labeled using dots in the graph. A scatter plot can therefore be created by creating the points. These points may or may not belong to the same groups. These groups can be labeled differently in the graph. Method 1: Using geom_mark_circle package

Legends in ggplot2 [Add, Change Title, Labels and Position ... - R CHARTS Change the position of the legend. By default, the automatic legend of a ggplot2 chart is displayed on the right of the plot. However, making use of the legend.position argument of the theme function you can modify its position. Possible values are "right" (default), "top", "left", "bottom" and "none". r - label specific point in ggplot2 - Stack Overflow This is easily achieved by mapping the new variable to colour (or size, shape, etc.): ggplot (data=df,aes (x=A,y=B,label=genes)) + geom_point (aes (color=group)) + geom_text (hjust=-1,vjust=1) However, you could also plot each group on a separate layer. To clearly highlight the important genes. Text — geom_label • ggplot2 To add labels at specified points use annotate () with annotate (geom = "text", ...) or annotate (geom = "label", ...). To automatically position non-overlapping text labels see the ggrepel package. Aesthetics geom_text () understands the following aesthetics (required aesthetics are in bold): x y label alpha angle colour family fontface group How to label specific points in scatter plot in R - GeeksforGeeks data - The data frame points to be plotted in the graph. The text method can be used to customize the plots to add string names to the plotted points. Syntax: text (x, y , labels , data) Parameter : x, y - The coordinates of the points to label. labels - the vector of labels to be added . data - the data to use for plotting. Example:

ggplot2 title : main, axis and legend titles - Easy Guides - STHDA The aim of this tutorial is to describe how to modify plot titles ( main title, axis labels and legend titles) using R software and ggplot2 package. The functions below can be used : ggtitle (label) # for the main title xlab (label) # for the x axis label ylab (label) # for the y axis label labs (...) # for the main title, axis labels and ... Adding Labels to a {ggplot2} Bar Chart - Thomas' adventuRe chart + geom_text ( aes ( label = pct, hjust = -0.2 )) + ylim ( NA, 100) Copy. Alternatively, you may want to have the labels inside the bars. chart + geom_text ( aes ( label = pct, hjust = 1 )) Copy. Again, a bit close to the end of the bars. By increasing the hjust value the labels can be moved further to the left. Add Labels at Ends of Lines in ggplot2 Line Plot in R (Example) ggplot ( data_label, aes ( x, y, col = group)) + # Draw ggplot2 plot with labels geom_line () + geom_label_repel ( aes ( label = label) , nudge_x = 1 , na.rm = TRUE) + theme ( legend.position = "none") Figure 2 shows the output of the previous code: A ggplot2 line plot with labels at the ends of lines. Video, Further Resources & Summary Data Point Shapes and Colors with ggplot2 - Journey to Data Scientist ggplot (happinessRegions, aes (Freedom, Happiness.Score)) + geom_point (aes (shape = Region, color = Region)) + theme_minimal () + ggtitle ("Freedom vs. Happiness (2015)") + labs (x = "Freedom", y = "Happiness Score") + scale_shape_manual (values = c (5, 7, 10, 13)) #specify individual shapes And now we have different shapes!

8 Annotations | ggplot2

How to Add Labels Directly in ggplot2 in R - GeeksforGeeks Method 1: Using geom_text () This method is used to add Text labels to data points in ggplot2 plots. It positions in the same manner as geom_point () does. Syntax: ggp + geom_text ( label, nudge_x , nudge_y, check_overlap ) Parameters: label: Text labels we want to show at data points. nudge_x: shifts the text along X-axis.

12 Extensions to ggplot2 for More Powerful R Visualizations ...

Modify axis, legend, and plot labels — labs • ggplot2 # The plot tag appears at the top-left, and is typically used # for labelling a subplot with a letter. p + labs(title = "title", tag = "A") # If you want to remove a label, set it to NULL. p + labs(title = "title") + labs(title = NULL)

9 Tips to Make Better Scatter Plots with ggplot2 in R ...

How to do selective labeling using ggplot2 key feature instead of label ... library (shiny) library (plotly) library (ggplot2) ui 10), aes (sepal.length,sepal.width,label=species)) # get clicked point click_data <- event_data ("plotly_click", source = "select") # if a point has been clicked, add a label to the plot if (!is.null (click_data)) { label_data <- data.frame (x = click_data [ ["x"]], y = click_data …

ggplot2 texts : Add text annotations to a graph in R software ...

GGPlot Legend Title, Position and Labels - Datanovia p + scale_x_discrete (limits = c ("2", "0.5", "1")). Change the order of the item in the legend. p + scale_fill_discrete (name = "Dose", labels = c ("A", "B", "C")). Rename the legend title and text labels. guides (). Change legend order and remove a specific legend of aesthetics, when you have multiple legends.

Chapter 9 General Knowledge | R Gallery Book

How to annotate a plot in ggplot2 - The R Graph Gallery Text is the most common kind of annotation. It allows to give more information on the most important part of the chart. Using ggplot2, 2 main functions are available for that kind of annotation:. geom_text to add a simple piece of text; geom_label to add a label: framed text; Note that the annotate() function is a good alternative that can reduces the code length for simple cases.

ggplot2 Toolbox 2

Add text labels with ggplot2 - The R Graph Gallery # library library (ggplot2) # keep 30 first rows in the mtcars natively available dataset data= head (mtcars, 30) # add one annotation ggplot (data, aes ( x= wt, y= mpg)) + geom_point () + # show dots geom_label ( label="look at this!", x=4.1, y=20, label.padding = unit ( 0.55, "lines" ), # rectangle size around label label.size = 0.35, color = …

ggplot2 versions of simple plots

8 Annotations | ggplot2 The ggplot2 package doesn't have all the answers, but it does provide some tools to make your life a little easier. The main tool for labelling plots is geom_text (), which adds label text at the specified x and y positions. geom_text () has the most aesthetics of any geom, because there are so many ways to control the appearance of a text:

ggplot2 labeling and coloring specific Data points in Scatter ...

r - How to label only certain points in ggplot2 - Stack Overflow #Format data global %>% mutate(label=ifelse(Year %in% c(2006,2030,2050),MTCO2,NA)) -> global #Plot ggplot(global,aes(x=Year, y=MTCO2,label=label)) + geom_line(size = 1,aes(color = Scenario)) + geom_point(size = 2,aes(color = Scenario)) + geom_text(vjust=-1)+ scale_x_continuous(name = "Year", breaks = c(1990, 2000, 2006, 2020, 2030, 2040, 2050)) + theme_bw() + labs(title = "Global CO2 Emissions Projections with and without Constraints")

Scatterplots in R with geom_point() and geom_text/label()

Labelling Horizontal Line in ggplot2 Graphic in R (Example Code) my_plot + # Adding horizontal line & label geom_hline ( aes ( yintercept = 3.15), col = "red") + geom_text ( aes (min( Sepal. Length), 3.15, label = 3.15, vjust = - 1), col = "red") Have a look at the following R programming tutorials. They focus on topics such as graphics in R, ggplot2, and text elements: Speichert die Einstellungen der ...

Be Awesome in ggplot2: A Practical Guide to be Highly ...

A Quick How-to on Labelling Bar Graphs in ggplot2 How to Position the Percentage Labels Inside the Bars. The geom_text() function comes with arguments that help you to align and position text labels:. hjust and vjust: the horizontal and vertical justification to align text.; nudge_x and nudge_y: the horizontal and vertical adjustment to offset text from points.; To put the labels inside, we first need to right-align the labels with hjust = 1.

r - Variable label position in ggplot line chart - Stack Overflow

How to Label Points on a Scatterplot in R (With Examples) This tutorial provides an example of how to label the points on a scatterplot in both base R and ggplot2. Example 1: Label Scatterplot Points in Base R. To add labels to scatterplot points in base R you can use the text() function, which uses the following syntax: text(x, y, labels, …) x: The x-coordinate of the labels; y: The y-coordinate of the labels