The columns for xpclr and xpclr-norm are empty In the result file.

[limaoshi]

Hello, I recently encountered an Warning message after running xpclr using the software xpclr v1.1.2

My Code: xpclr --format vcf --input keep.recode.vcf --samplesA pinyuan.txt --samplesB gaoyuan.txt -C 1 --ld 0.95 --maxsnps 200 --size 50 --step 50 --out ./test2

My Warning : 2024-06-08 19:41:36 : INFO : running xpclr v1.1.2 2024-06-08 19:41:36 : INFO : Loading VCF 2024-06-08 19:42:58 : INFO : VCF loading complete 2024-06-08 19:42:58 : INFO : 59,263 SNPs in total are in the provided input files 2024-06-08 19:42:58 : INFO : 0 SNPs excluded as multiallelic 2024-06-08 19:42:58 : INFO : 0 SNPs excluded as missing in all samples in a population 2024-06-08 19:42:58 : INFO : 625 SNPs excluded as invariant or singleton in population 2 2024-06-08 19:42:58 : INFO : 58,638/59,263 SNPs included in the analysis (98.95%) 2024-06-08 19:42:58 : INFO : Done dropping above SNPs from analysis. XP-CLR algorithm starting. 2024-06-08 19:42:59 : INFO : No genetic distance provided; using rrate of 1e-08/bp 2024-06-08 19:42:59 : INFO : Omega estimated as : 0.053405 /home/limaoshi/mambaforge/envs/liftover/lib/python3.12/site-packages/xpclr/util.py:160: RuntimeWarning: Mean of empty slice out["xpclr_norm"] = (out.xpclr - np.nanmean(out.xpclr))/np.nanstd(out.xpclr) /home/limaoshi/mambaforge/envs/liftover/lib/python3.12/site-packages/numpy/lib/nanfunctions.py:1879: RuntimeWarning: Degrees of freedom <= 0 for slice. var = nanvar(a, axis=axis, dtype=dtype, out=out, ddof=ddof, 2024-06-08 20:05:46 : INFO : Analysis complete. Output file ./test2

Subsequently, when I opened the result file, I found that the columns for xpclr and xpclr-norm were empty. I don't know what the reason is, and my input files were all prepared according to the requirements.

Could you give me some suggestions? Thank you very much.