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
input data:


Optional
Figure size
figure width：
figure height：

Fontsize and Label
ticks fontsize:
label fontsize:
X label:
Y label:
markersize:

Shape, color, name of four quadrants
First
square circle triangle invert triangle plus star
color1: , edgecolor1:
name1:

Second
square circle triangle invert triangle plus star
color2: , edgecolor2:
name2:

Third
square circle triangle invert triangle plus star
color3: , edgecolor3:
name3:

Fourth
square circle triangle invert triangle plus star
color4: , edgecolor4:
name4:

line style, width, color
solid line dash line dash dot line dot line

X vertical line location:
Y horizontal line location:
line width:
line color:

Fontfamily


Four quadrant scatter plot


Introduction
Four quadrants were seperated by horizontal and vertial lines, each quadrant represents a class of values.
Data instructions
Data contain 3 columns, one is name, others are values. Y first, then X.
Examples in paper
Input 
gene	y	x
gene1	1	1
gene2	-1	0.5
gene3	-2	-2
gene4	3	-1
Output

1) How to plot?
1, Prepare data
2, Open with excel, and change into the same format as the example
3, Copy and paste data into the input frame
4, Select parameters
5, Submit and download figure files

2) Why NO figure generated?
Script need strigent input format, please read the instructions and examples carefully.

3) How to cite?
2000+ 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.

4) FAQs