小编Abd*_*rad的帖子

我正在编写一个应用程序,我希望sidebarPanel中的图像比我放在其中的图像大一点.随着窗口变小或变大,侧边栏也会变小,但图像保持静止.我该如何解决这个问题？有没有办法获得侧边栏长度或有更好的方式来渲染图像？

ui.R

library(shiny)

shinyUI(bootstrapPage(

   # Application title
   titlePanel("Sidebar Image App"),
   sidebarPanel(
      imageOutput("image", height = "auto")
   )
))

server.R

library(shiny)

shinyServer(function(input, output, session) {

   output$image <- renderImage({
      return(list(
         src = "one.png",
         contentType = "image/png",
         height = 185,
         alt = "Face"
      ))
   })
})

当我点击Leaflet多边形时,我想让tabPanel在Shiny中更改.我有几个关于如何做到这一点的想法,但我找不到实现它们所需的信息.我在tabPanel中有传单,但是我想在单击多边形时切换到另一个选项卡.

    leaflet(llmap) %>%
      addTiles() %>%
      addPolygons(stroke = F,
                  fillOpacity = .8,
                  smoothFactor = .5,
                  color=~pal(x),
                  popup = pop)

我想过制作popup=updateTabsetPanel(session="New Tab"),但那不起作用.我的另一个想法是随时调用updateTabsetPanel(session="New Tab")用户点击一个新的多边形,但我不知道我需要返回什么事件让它知道点击了一个新的多边形,或者即使弹出一个新的弹出窗口.有谁知道这个？

我有以下脚本在特定基础中创建所有可能的点:

int main(){

  int base;
  cout << "Enter Base: ";
  cin >> base;

  int dimension;
  cout << "Enter Dimension: ";
  cin >> dimension;

  //This creates all possible numbers
  vector<double> dist;
  dist.reserve(base);
  for(int k=0; k<base; k++){
    dist[k] = (-1.0+k*2.0/(base-1.0));
  }

  vector< vector<double> > points;
  int perms = 1;
  for(int i=0; i<dimension; i++){
    perms *= base;
  } // base^dimension
  points.reserve(perms);

  vector<double> stand;
  stand.reserve(dimension);

  // Defined later
  getPermutations(dist, base, stand, dimension, 0, points);

  for(int i=0; i<points.size(); i++){ //DOESN'T DO ANYTHING BECAUSE SIZE IS …

我已经和R一起工作了大约两年了,我不知道这里有什么问题.我有这样的数据框架.

     incomeGroup    diabetic    percent
      (fctr)      (fctr)      (dbl)
1        <10,000 NonDiabetic 0.87689665
2        >75,000 NonDiabetic 0.93173965
3  10,000-15,000 NonDiabetic 0.80568579
4  15,000-20,000 NonDiabetic 0.84773930
5  20,000-25,000 NonDiabetic 0.83956823
6  25,000-35,000 NonDiabetic 0.86481373
7  35,000-50,000 NonDiabetic 0.86237913
8  50,000-75,000 NonDiabetic 0.91666293
9        <10,000    Diabetic 0.12310335
10       >75,000    Diabetic 0.06826035
11 10,000-15,000    Diabetic 0.19431421
12 15,000-20,000    Diabetic 0.15226070
13 20,000-25,000    Diabetic 0.16043177
14 25,000-35,000    Diabetic 0.13518627
15 35,000-50,000    Diabetic 0.13762087
16 50,000-75,000    Diabetic 0.08333707

然后我使用ggplot2使用以下代码制作图表:

ggplot(income3, aes(x = incomeGroup, y = percent, fill …

我正在尝试为向量向量保留空间,但它不起作用并抛出以下错误:

terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc

每次我使用足够大的数字.我所拥有的最小版本如下:

#include <vector>
#include <iostream>
using namespace std;


int main(){

  int base;
  cout << "Enter Base: ";
  cin >> base;

  int dimension;
  cout << "Enter Dimension: ";
  cin >> dimension;

  int perms = 1;
  for(int i=0; i<dimension; i++){
    perms *= base;
  } // This gets the number of permutations with repetition

  int length;
  cout << "Enter Length: ";
  cin >> length;

  float structSize = 1.0;

  for(float i=0.0; i<length; i++){ …