Note: input data format must match the example on the right, tab-seperated
1, data from excel, copy and paste data into the input frame
2, data from txt, must tab-seperated, copy and paste data into the input frame
3, use point as decimal separator, not comma. e.g. 3.14, not 3,14 as pi

Required
chromosome length data:

genomic position data:


Optional
left margin:
right margin:
bottom margin:
top margin:

Colors
Color 1:
Color 2:
Color 3:
Color 4:
Color 5:
Color 6:

Fontsize
ticks fontsize:
axis label fontsize:

Fontfamily


chromosome distribution with centromere

Introduction
Chromosome distributions of peaks, SNPs, genes. Up and down arc bars represent long arm and short arm respectively.
Input data instructions
Chromosome length data contain 3 columns: the first column is chromosome names, the second column is chromosome lengths, and the last column is location of centromere (mean of start and end).
Genomic location data contain 3 columns (column 3 is optional): the first column is chromosome name, the second column is location and the third column is categories, such as up, dn. At most 6 categories, i.e. 6 user-defined colors.
Examples from papers


Chromosome length
2A	780798557	326000000
3A	750843639	316000000
7B	750620385	288000000
4A	744588157	264000000
7A	736706236	360000000
6B	720988478	323000000
5B	713149757	198000000
5A	709773743	108000000
1B	689851870	237000000
4B	673617499	303000000
2D	651852609	264000000
7D	638686055	336000000
6A	618079260	283000000
3D	615552423	237000000
1A	594102056	210000000
5D	566080677	185000000
4D	509857067	182000000
1D	495453186	166000000
6D	473592718	211000000
Genomic location
chrom	pos	type
2A	50602155	A
2A	58861277	A
3A	178099541	A
3A	77794217	B
4D	20732565	B
4D	11935999	B
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