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
Note: with header line

Optional
Figure size
figure width:
figure height:

month seperation line color:
month seperation line width:

Heatmap colors


Fontfamily


Calendar heatmap

Introduction
Displaying values of each day with heatmap accoding to the dates, often used in Air Quality Index, hydrology.
Input data instructions
Input data contain 2 columns: the first column is date (header must be "date", date format: 2020-8-8), and the second column is values (header will be displayed in the title).
Paper example
Input Example
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