如何绘制在C直方图 [英] how to plot a histogram in c

问题描述

如何从2个数组绘制在C直方图？

how do I plot a histogram in c from 2 arrays?

推荐答案

约一点我不相信，重复我在评论中发现的问题思考实在是有求必应。所以我会说几句话。

Thinking about the problem a bit I'm not convinced that the "duplicate" I identified in the comments is really responsive. So I'll say a few words.

如果您已经在一个ASCII艺术的方式解决，那么你只有一个更多的决定，使：垂直或水平条。水平很简单：只是决定缩放，然后打印每个仓 bin_contents *比例符号。在code-高尔夫链接确实是一个有用的模型的什么的做，甚至如果没有一个很好的例子的如何的写。

If you've settled on a ASCII art approach, then you have only one more decision to make: vertical or horizontal bars. Horizontal is easy: just decide on the scaling and then print bin_contents*scale symbols for each bin. The code-golf link really is useful as a model of what to do, even if not a good example of how to write it.

然而，许多领域在直方图的presentation竖条的期望。这是一个有点困难，但考虑到伪code

However, many fields have an expectation of vertical bar in the presentation of histograms. That's a little harder, but consider the pseudocode

sacle = find_scale(input_array)
max_height = find_max(input_array) * scale
for (i=max_height; i>=0; i--) 
   if (some condition)
      print_in_N_digits(round(i/scale)) // to label the scale
   else
      print_in_N_digits()               // lines with no labels
   print " |"                           // set up the vertical axis
   for (j=first_bin to lat_bin)
      if (input[j]*scale >= i)
         print("#")
      else
         print(" ")
      print_new_line
print_in_N_digits(0)
print(" +")
for (j=first_bin to last_bin)
   print("-")
print_new_line
print_in_N_digits()
print(" 0")
for (j=first_bin to last_bin)
   if (some other condition)
      print_bin_label

这只是走在整个页面，使用上栏每仓，并在每个级别的打印或者，或＃为每列。直方图印刷部分是真的很不容易。所有的复杂性来自管理轴线和标签

This just walks across the page, using on column per bin and at each level prints either " " or "#" for each column. The histogram printing part is really very easy. All the complexity arises from managing the axis and labels.

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