ggvis

问题 I am trying to create an interactive visualization with the ggvis package. Specifically, the user should be able to select which of the variables should be plotted on which axes. One way to do this was already presented in answer 2 of this question. However in this solution the axes are not labeled correctly: E.g. in this example library("ggvis") library("magrittr") sel <- input_select(names(mtcars),map=as.name) mtcars %>% ggvis(sel,~mpg) %>% layer_points() The y-axis has a label of "reactive

问题 I would like to change the default position of the legend in a ggvis plot. library(ggvis) data(mtcars) mtcars %>% ggvis(x=~wt, y = ~mpg, fill = ~cyl) %>% layer_points() By default, the legend is on the right side. How to put it on the top? With ggplot you can achieve this simply but I could not find any similar way to do the same with ggvis . library(ggplot2) mtcars %>% ggplot(aes(x=wt, y=mpg, fill=cyl)) + geom_point() + theme(legend.position = 'top') This thread suggests that up until now

问题 I would like to create an interactive histogram which gives information about the bins by hover. This thread gives answer to how to add tooltip with count numbers. library("ggvis") cocaine %>% ggvis(x = ~weight) %>% layer_histograms() %>% add_tooltip(function(df) (paste("count:", df$stack_upr_ - df$stack_lwr_))) How can I add the share of each bin as well? I should somehow add nrow(cocaine) to ggvis and create the shares from count but I did not succeed on how to achieve that (tried to take

问题 library(ggvis) mtcars %>% ggvis(~wt, ~mpg) %>% layer_points() %>% layer_model_predictions(model = "lm", se = TRUE) The above produces a scatter plot with a fitted regression line and 95% confidence limits on . Question : How to draw a scatter plot with a fitted regression line and 95% prediction limits on ? 回答1: Here is an idea. It probably needs more work to get exactly what you're after though. mtcars.pi = data.frame(mtcars, predict(lm(mpg~wt,data=mtcars), interval="prediction")) mtcars.pi

问题 I've searched, so please forgive me if I'm missing something. Let's assume a dataframe that contains Name, Date, Calories, where Calories is the total number of calories that person consumed that day. Name Date Calories Amy 1/1/01 1500 Amy 1/2/01 1600 Amy ... ... Sue 1/1/01 1450 Sue 1/1/02 1500 Sue ... ... Jim ... ... What I'd like to do is to use ggvis to plot calories for each person (Name). I know I can use dplyr's group_by, and get this on a single plot, but that will be too busy. And I

问题 I know that the question about how to integrate greek symbols into axis titles in ggvis plots was answered by Thomas K in Special symbols in ggvis library(ggvis) title <- "CH\u2084 (\u03BC mol)" mtcars %>% ggvis(~wt, ~mpg) %>% layer_points() %>% add_axis('x', orient = 'top', title = title) The solution seems straightforward but unfortunately does not work for me. I am using R studio and it plots the diagram but instead of the µ mol displays a little question mark in a diamond (rhombus) shape.

问题 I am having problem with the following example ggvis code which is meant to make a plot that highlights an entire group of points when you hover over any member of that group. I would then like the highlighting to vanish as soon as you hover off. What is happening is that the highlighting initially works but then when you hover off, the highlighting stays, and only vanishes when you hover over another set of points and then hover off them again. library(magrittr) library(dplyr) library(ggvis)

问题 When I try to knit a RMarkdown document with ggvis plots to Word, I get the following message from Rstudio. Error: Functions that produce HTML output found in document targeting docx output. Please change the output type of this document to HTML. Execution halted Does there exist an elegant solution (without too much effort) to make this possible, perhaps using export_png and vg2png ? 回答1: Here is an example: ```{r setup, include=FALSE} library(dplyr) library(ggvis) ``` The following table

问题 I am trying to use Shiny and ggvis to: 1) upload a data set 2) have the user select 2 columns (x, y) 3) return a ggvis plot displaying (x, y) from the uploaded data set I've tried editing the examples from the Shiny Interactivity page as well as the movie explorer example. However, no chart is displayed. I think my issue is around uploading the data set, but I don't know where to begin... Any suggestions? Note - I've also tried this using rCharts, but I run into similar problems where no

问题 I am trying to use Shiny and ggvis to: 1) upload a data set 2) have the user select 2 columns (x, y) 3) return a ggvis plot displaying (x, y) from the uploaded data set I've tried editing the examples from the Shiny Interactivity page as well as the movie explorer example. However, no chart is displayed. I think my issue is around uploading the data set, but I don't know where to begin... Any suggestions? Note - I've also tried this using rCharts, but I run into similar problems where no