I'm using RStudio and the RPGR package to elaborate some data. I need to obtain the coordiates of a mouse click on a plot. It works using the locator() function but i need a bigger version of my plot so i need to use a graphic device. I tried with window() and X11(), i manage to plot the data and my cursor becomes a cross, meaning it reads the locator function, but it does not record my clicks. Am I doing something wrong?
Iread that there are some problems with locator() and RStudio, could it be the cause?
Related
I have a 3D rgl plot that users can modify based on some inputs (you can see it in action at https://magalab.shinyapps.io/rgl_test/). But every time the user modifies the input settings, renderer returns to the initial orientation to redraw the model. I want to keep the orientation consistent between updates. I know how to do that in rgl, and there is already another similar question
(Shiny RGL Plot3D: Keep Plot View Orientation On Replot), which did not receive any answer.
There is potentially a relevant topic at shiny app rglwidget get userMatrix to generate another plot with same rotation, but I don't want to see the userMatrix, simply pass it to the open3d().
Unfortunately, I am not familiar with Javascript and Shiny to achieve this. Any pointers will be much appreciated.
In the very newest rgl (version 0.99.18, currently only on R-forge), there's a function called shinyGetPar3d that is designed to do what you want. See example(shinyGetPar3d) for a demonstration of how to use it.
I was wondering if there is a way to save surface plots in IDL in a way that is convenient to reopen them. As far as I am aware there are only two ways of doing this:
The first way is to save your surface plot as an image e.g. png. The trouble with this is that the viewing angle is fixed and you can no longer drag with the mouse to rotate the surface plot.
The second way is to save the code which generates the plot. Trouble with this is the code often generates loads of plots which are usually just saved as images.
I would like something you can open easily and which opens the surface plot as though you had just run the code to generate it. So that you are free to rotate it by dragging the mouse.
Does this exist?
I only have IDL version 8.3.
If you 'Generate code/save data' (either via the toolbar at the bottom of the window or via the generateCode method with the SAVEDATA keyword), you get a .sav file that contains your plot. Either use the code generated to restore it, or use the generated code as an example to write your own.
I want to use interactive plots in R to be able to select x intervals in plots, i have tried plot.ly and ggvis and it seems that the mouse click on the plot followed by horizontal drag, used for zooming is exactly what i want, but zoom would have to be disabled and the [x start, x end] values must be returned to R. Any ideas if this is possible, and if so, how?
I tried to make tooltip function available with static_output (without shiny).
You can check my fork (https://github.com/lujiacn/ggvis
), enable the tooltip by default, in Rstudio and output html widget.
The way is put tooltip content in one variable called "tooltip". If no "tooltip" variable, wills show the all values linked to the data.
Is there a way to enable locator() functionality in the RStudio plot zoom? This only works in the smaller window (default bottom right) of RStudio but when you click on a viewer already open as a separate window, no coordinates are captured:
plot(iris$Petal.Width, iris$Petal.Length)
locator()
Perhaps the answer here is that is not currently implemented and that is why I couldn't find mention of it online.
I'm using RStudio version 0.99.491.
Thanks in advance.
This does not directly use RStudio's "Zoom" function, but gets pretty close at what you're probably after:
df <- data.frame(1:4)
windows()
plot(df)
locator(1)
A couple of notes:
You can't dynamically resize the window. If you want to zoom in, you first need to call windows(), then resize the window, then execute plot(df).
Be careful to specify the n argument for locator(). Otherwise it will crash your R session because of this bug. (Which hasn't been resolved AFAIK)
But if your purpose is to be able to use locator() on a zoomed version of a plot (i.e. if you have a very crowded plot), this should do the trick.
How do you delete the current (but not all) plots in the RStudio plotting device?
dev.off() will remove all plots, but what if I just want to remove one? I don't want to have to press that red 'x' button because I want to remove one plot without pressing a button.
In R, you would just use dev.new() before each plot, so you dev.off() to only clear the last plot.
In RStudio, you can use x11(), windows() or quartz() (depending on your device) before each plot. Then call dev.off() to clear last plot. You can also use dev.set() to choose specific plots that way.
If your question is specifically asking to delete the last plot within the same RStudio window (rather than making new windows), not sure if it's possible, since RStudio treats that window as one device. An idea would be to look at a way to call the C++ function removePlot() in the RStudio project.
I found in the Github repository for RStudio the C++ code:
display.removePlot(display.activePlotIndex());
You could output the plots and manage the files that way.