diff options
| author | Frank Wuerthwein <fkw@ucsd.edu> | 2009-02-13 13:44:06 +0000 |
|---|---|---|
| committer | Frank Wuerthwein <fkw@ucsd.edu> | 2009-02-13 13:44:06 +0000 |
| commit | df79a3e65d7a522fd942269261d9e3ff38a8e2aa (patch) | |
| tree | 57cad2992eca670c600a6a0e11a51eebd2b734ea | |
| parent | cc04c8f261dd1db3db486ec3a3b7c7e565b920fe (diff) | |
Initial version
| -rw-r--r-- | src/lib/rrdFlotSupport.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/lib/rrdFlotSupport.js b/src/lib/rrdFlotSupport.js new file mode 100644 index 0000000..8ab8ba7 --- /dev/null +++ b/src/lib/rrdFlotSupport.js @@ -0,0 +1,50 @@ +/*
+ * Support library for grpahing RRD files with Flot
+ * Part of the javascriptRRD package
+ * Copyright (c) 2009 Frank Wuerthwein, fkw@ucsd.edu
+ *
+ * Original repository: http://javascriptrrd.sourceforge.net/
+ *
+ * MIT License [http://www.opensource.org/licenses/mit-license.php]
+ *
+ */
+
+/*
+ *
+ * Flot is a javascript plotting library developed and maintained by
+ * Ole Laursen [http://code.google.com/p/flot/]
+ *
+ */
+
+function rrdDS2FlotSeries(rrd_file,ds_id,rra_idx,want_label) {
+ var ds=rrd_file.getDS(ds_id);
+ var ds_name=ds.getName();
+ var ds_idx=ds.getIdx();
+ var rra=rrd_file.getRRA(rra_idx);
+ var rra_rows=rra.getNrRows();
+ var last_update=rrd_file.getLastUpdate();
+ var step=rra.getStep();
+
+ var flot_series=[];
+ for (var i=0;i<rra_rows;i++) {
+ var timestamp=(last_update+(i-rra_rows+1)*step)*1000.0;
+ var el=rra.getEl(i,ds_idx);
+ if (el!=undefined) {
+ flot_series.push([timestamp,el]);
+ } else {
+ if ((i>0) && ((i+1)<rra_rows)) {
+ flot_series.push([timestamp,null]);
+ } else {
+ // Flot misbehaves if first or last point is null
+ flot_series.push([timestamp,0]);
+ }
+ }
+ } // end for
+
+ if (want_label!=false) {
+ return {label: ds_name, data: flot_series};
+ } else {
+ return {data:flot_series};
+ }
+}
+
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