plot

问题 In general when we do plotting, the plot has the x-axis on bottom (left to right) and y-axis on left (bottom to top). For example, In R-programming I have a code like this: t <- seq(0,1,0.2) # need t values in top x axis plot(t,t^2,type="l") # need t^2 values in inverted y-axis Now, if we want plot so that the x-axis is on top (left to right) and y-axis inverted (top to bottom). How can we achieve such a feat in R-programming? I searched following links in stackoverflow but they could not

问题 First time posting, but have found these forums incredibly helpful with my python learning! I have a problem when I call plt.plot as it's resizing my tkinter window. I've tried this in python 2.7 and 3.5 both seem to have the issue. Below is just some sample code to re-create the problem. You don't even need to show the graph for this problem to be re-created as soon as you plot the data it resizes. Before After from tkinter import * import matplotlib.pyplot as plt x = [1,2,3,4,5] master = Tk

问题 First time posting, but have found these forums incredibly helpful with my python learning! I have a problem when I call plt.plot as it's resizing my tkinter window. I've tried this in python 2.7 and 3.5 both seem to have the issue. Below is just some sample code to re-create the problem. You don't even need to show the graph for this problem to be re-created as soon as you plot the data it resizes. Before After from tkinter import * import matplotlib.pyplot as plt x = [1,2,3,4,5] master = Tk

问题 First time posting, but have found these forums incredibly helpful with my python learning! I have a problem when I call plt.plot as it's resizing my tkinter window. I've tried this in python 2.7 and 3.5 both seem to have the issue. Below is just some sample code to re-create the problem. You don't even need to show the graph for this problem to be re-created as soon as you plot the data it resizes. Before After from tkinter import * import matplotlib.pyplot as plt x = [1,2,3,4,5] master = Tk

问题 f(x,y)= (1/25)*(20-x)/x 10<x<20, x/2 <y <x 0 o.t I have to create this image through this expression. but x <- seq(10, 20, length=20) y <- seq(10, 20, length=20) f <- function(x,y){(1/25)*(20-x)/5} z <- outer(x,y,f) persp(x,y,z,theta=30,phi=30, expand=0.5,col=rainbow(19), border=NA) what is wrong? 回答1: You should mask z based on the constraint. As a suggestion, you can use an amazing interactive rgl package in R. #source: https://stackoverflow.com/questions/50079316/plot3d-how-to-change-z

问题 f(x,y)= (1/25)*(20-x)/x 10<x<20, x/2 <y <x 0 o.t I have to create this image through this expression. but x <- seq(10, 20, length=20) y <- seq(10, 20, length=20) f <- function(x,y){(1/25)*(20-x)/5} z <- outer(x,y,f) persp(x,y,z,theta=30,phi=30, expand=0.5,col=rainbow(19), border=NA) what is wrong? 回答1: You should mask z based on the constraint. As a suggestion, you can use an amazing interactive rgl package in R. #source: https://stackoverflow.com/questions/50079316/plot3d-how-to-change-z

问题 I would like to plot a tree resulting from glmtree (partykit package). Unfortunately, the terminal nodes are overlapping and the labels of the graphs are no longer displayed properly. The code that generates the tree is this one: library(partykit) library(aVirtualTwins) data(sepsis) attach(sepsis) data <- cbind(y = survival, trt = as.factor(THERAPY), sepsis[,3:13]) formula <- as.formula(paste("y ~ trt", paste(names(sepsis[,3:13]), collapse = " + "), sep = " | ")) fit <- glmtree(formula, data,

问题 I need a phase portrait of the following nonlinear system given in polar form... \dot{r} = 0.5*(r - r^3) \dot{\theta} = 1 I know how to do it in Mathematica... field1 = {0.5*(r - r^3), 1}; p1 = StreamPlot[Evaluate@TransformedField["Polar" -> "Cartesian", field1, {r, \[Theta]} -> {x, y}], {x, -3, 3}, {y, -3, 3}, Axes -> True, StreamStyle -> Gray, ImageSize -> Large]; Show[p1, AxesLabel->{x,y}, ImageSize -> Large] How can I do the same using pyplot.quiver in Python? 回答1: Just very naive

问题 I am plotting multiple heatmaps together and don't want them to crowed the space with their axes' labels. I tried to use plt.tight_layout() and it is throw some errors at me. This is my result without plt.tight_layout(): heatmaps without plt.tight_layout() How can I plot these heatmaps together without them overlapping/overcrowding? What do these plt.tight_layout() errors mean? This is the error I get: Traceback (most recent call last): File "C:/Users/mbsta/Desktop/OOL_Research/heatmaptrying

问题 I am plotting multiple heatmaps together and don't want them to crowed the space with their axes' labels. I tried to use plt.tight_layout() and it is throw some errors at me. This is my result without plt.tight_layout(): heatmaps without plt.tight_layout() How can I plot these heatmaps together without them overlapping/overcrowding? What do these plt.tight_layout() errors mean? This is the error I get: Traceback (most recent call last): File "C:/Users/mbsta/Desktop/OOL_Research/heatmaptrying