do not render hz if no messages

foxglove · Nov 1, 2023 · 956c05b · 956c05b
1 parent 526626f
commit 956c05b
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/go/cli/mcap/cmd/info.go b/go/cli/mcap/cmd/info.go
@@ -145,8 +145,12 @@ func printInfo(w io.Writer, info *mcap.Info) error {
 		}
 		if info.Statistics != nil {
 			channelMessageCount := info.Statistics.ChannelMessageCounts[chanID]
-			frequency := 1e9 * float64(channelMessageCount) / float64(end-start)
-			row = append(row, fmt.Sprintf("%*d msgs (%.2f Hz)", maxCountWidth, channelMessageCount, frequency))
+			if (channelMessageCount > 0) {
+				frequency := 1e9 * float64(channelMessageCount) / float64(end-start)
+				row = append(row, fmt.Sprintf("%*d msgs (%.2f Hz)", maxCountWidth, channelMessageCount, frequency))
+			} else {
+				row = append(row, fmt.Sprintf("%*d msgs", maxCountWidth, channelMessageCount))
+			}
 		}
 		switch {
 		case schema != nil: