Read before use
1, check data with precheck (windows version) tools
2, data from excel, copy and paste data into the input frame
3, data from txt, must tab-seperated, copy and paste data into the input frame
4, specieal and non-English characters such as #, <, >, %, (, ), α are not friendly
5, use point as decimal separator, not comma. e.g. 3.14, not 3,14 as pi
Required

Optional
Figure size
figure width (increase this value if legend truncated):
figure height:

Fontsize
percentage fontsize:
label fontsize:

Colors. 6 user-defined colors, 6+ default colors, at most 20
color1:
color2:
color3:
color4:
color5:
color6:

Legend


Direction


Fontfamily


Two layer donut plot

Data contains 3 rows. The first column is items, other columns are values.
Input 
items	Ann	Bob	Carl	David
day1	1	2	3	4
day2	2	5	4	7
Output

1) How to plot?
1, Put data in excel according to the example format.
2, Copy and paste into input frame.
3, Input pre-checking button to check input
4, After checking pass, select parameters, submit and download

2) How to cite?
4000+ papers in (Google Scholar)
Tang D, Chen M, Huang X, Zhang G, Zeng L, Zhang G, Wu S, Wang Y. SRplot: A free online platform for data visualization and graphing. PLoS One. 2023 Nov 9;18(11):e0294236. doi: 10.1371/journal.pone.0294236. PMID: 37943830.

3) FAQs