Function:
Create a histogram representing the frequency distribution of file data.
Input:
The input file should be a tab delimited txt file. A sample file is shown as follow:
1 5 6 8 22 5 8 66 3 32 22 11 55 55 22 11 22 33 22
Parameters:
① Title: define chart title
② X-axis label: define horizontal axis title
③ Y-axis label: define vertical axis title
④ Color: define bar color (only one color is needed)
⑤ Group number: define how many categories along x-axis
⑥ Boundary point: define what value can separate each intervals
⑦ Type of vertical axis: define the y-axis value shown by “Frequency” or “Abundance”
Output:
A frequency histogram in PNG,JPEG,PDF,SVG format.