sample: fix -n for in-memory mode. #518

shenwei356 · shenwei356 · commit 550867a60a52 · 2025-04-03T23:26:15.000+08:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,8 @@
         - fix decimal places of some fields when using `-T`.
     - `seqkit fx2tab`:
         - fix the calculation of GC content (`--gc`). Previously, the denominator was the total sequence length, which could lead to inaccuracies due to the potential presence of gaps in the sequence. [#515](https://github.com/shenwei356/seqkit/issues/515)
+    - `seqkit sample`:
+        - fix `-n` for in-memory mode. [#518](https://github.com/shenwei356/seqkit/issues/518)
 - [SeqKit v2.10.0](https://github.com/shenwei356/seqkit/releases/tag/v2.10.0) - 2025-03-12
 [![Github Releases (by Release)](https://img.shields.io/github/downloads/shenwei356/seqkit/v2.10.0/total.svg)](https://github.com/shenwei356/seqkit/releases/tag/v2.10.0)
     - `seqkit`:
diff --git a/seqkit/cmd/sample.go b/seqkit/cmd/sample.go
@@ -154,7 +154,7 @@ Attention:
 					config.LineWidth = 0
 				}
 
-				proportion = float64(number) / float64(len(records))
+				proportion = float64(number) / float64(len(records)) * 1.1
 
 				for _, record := range records {
 					// if <-randg <= proportion {

Original file line number	Diff line number	Diff line change
`@@ -154,7 +154,7 @@ Attention:`
`154`	`154`	`config.LineWidth = 0`
`155`	`155`	`}`
`156`	`156`
`157`		`- proportion = float64(number) / float64(len(records))`
	`157`	`+ proportion = float64(number) / float64(len(records)) * 1.1`
`158`	`158`
`159`	`159`	`for _, record := range records {`
`160`	`160`	`// if <-randg <= proportion {`