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authorXiao Pan <xyz@flylightning.xyz>2024-11-12 14:32:52 -0800
committerXiao Pan <xyz@flylightning.xyz>2024-11-12 14:32:52 -0800
commit898f9b87858bf54d49c0ef6db57341b9ae90bb28 (patch)
tree521ced052e7c1f9d826239299bbe042b754eb445 /sh/il
parentfe442a6172d1f4d86fd62d0efae9f1b520eab59d (diff)
il option to input scale and better comment about usage
Diffstat (limited to 'sh/il')
-rwxr-xr-xsh/il4
1 files changed, 2 insertions, 2 deletions
diff --git a/sh/il b/sh/il
index 7c75a71..7741695 100755
--- a/sh/il
+++ b/sh/il
@@ -1,6 +1,6 @@
#!/bin/sh
# InterpoLation
-# x=$1, xa=$2, xb=$3, ya=$4, yb=$5
+# y=?, x=$1, xa=$2, xb=$3, ya=$4, yb=$5, scale=$6
# https://en.wikipedia.org/wiki/Interpolation#Linear_interpolation
-echo "scale=4;$4+($5-$4)*($1-$2)/($3-$2)" | bc
+echo "scale=${6:-4};$4+($5-$4)*($1-$2)/($3-$2)" | bc