add blob to basics documentation about negative shift

Signed-off-by: schou <pschou@users.noreply.github.com>
5 years ago · 8aa9cc3978
parent 0c577c547b
commit 8aa9cc3978
1 changed files with 5 additions and 0 deletions
--- a/docs/querying/basics.md
+++ b/docs/querying/basics.md
@ -204,6 +204,11 @@ The same works for range vectors. This returns the 5-minute rate that

    rate(http_requests_total[5m] offset 1w)

+For comparisons with temporal shifts forward and backward, a negative offset
+can be specified:
+
+    rate(http_requests_total[5m] offset -1w)
+
 ### @ modifier

 The `@` modifier allows changing the evaluation time for individual instant