diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23cc05810eb..0ade6b78d33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
- [Issue #171](https://github.com/grafana/grafana/issues/171). Panel: Different time periods, panels can override dashboard relative time and/or add a time shift
- [Issue #1488](https://github.com/grafana/grafana/issues/1488). Dashboard: Clone dashboard / Save as
- [Issue #1458](https://github.com/grafana/grafana/issues/1458). User: persisted user option for dark or light theme (no longer an option on a dashboard)
+- [Issue #452](https://github.com/grafana/grafana/issues/452). Graph: Adds logarithmic scale option (log base 10)
**Enhancements**
- [Issue #1366](https://github.com/grafana/grafana/issues/1366). Graph & Singlestat: Support for additional units, Fahrenheit (°F) and Celsius (°C), Humidity (%H), kW, watt-hour (Wh), kilowatt-hour (kWh), velocities (m/s, km/h, mpg, knot)
diff --git a/src/app/panels/graph/axisEditor.html b/src/app/panels/graph/axisEditor.html
index edf61a04cd3..40391995fc4 100644
--- a/src/app/panels/graph/axisEditor.html
+++ b/src/app/panels/graph/axisEditor.html
@@ -30,6 +30,12 @@
empty-to-null ng-model="panel.grid.leftMin"
ng-change="render()" ng-model-onblur>
+
+ Scale type
+
+
+
+
Label
@@ -69,6 +75,12 @@
empty-to-null ng-model="panel.grid.rightMin"
ng-change="render()" ng-model-onblur>
+
+ Scale type
+
+
+
+
Label
diff --git a/src/app/panels/graph/graph.js b/src/app/panels/graph/graph.js
index 967991e5da8..5e2066466ca 100755
--- a/src/app/panels/graph/graph.js
+++ b/src/app/panels/graph/graph.js
@@ -27,6 +27,7 @@ function (angular, $, kbn, moment, _, GraphTooltip) {
var dashboard = scope.dashboard;
var data, annotations;
var sortedSeries;
+ var graphHeight;
var legendSideLastValue = null;
scope.crosshairEmiter = false;
@@ -64,19 +65,19 @@ function (angular, $, kbn, moment, _, GraphTooltip) {
function setElementHeight() {
try {
- var height = scope.height || scope.panel.height || scope.row.height;
- if (_.isString(height)) {
- height = parseInt(height.replace('px', ''), 10);
+ graphHeight = scope.height || scope.panel.height || scope.row.height;
+ if (_.isString(graphHeight)) {
+ graphHeight = parseInt(graphHeight.replace('px', ''), 10);
}
- height -= 5; // padding
- height -= scope.panel.title ? 24 : 9; // subtract panel title bar
+ graphHeight -= 5; // padding
+ graphHeight -= scope.panel.title ? 24 : 9; // subtract panel title bar
if (scope.panel.legend.show && !scope.panel.legend.rightSide) {
- height = height - 26; // subtract one line legend
+ graphHeight = graphHeight - 26; // subtract one line legend
}
- elem.css('height', height + 'px');
+ elem.css('height', graphHeight + 'px');
return true;
} catch(e) { // IE throws errors sometimes
@@ -349,6 +350,8 @@ function (angular, $, kbn, moment, _, GraphTooltip) {
position: 'left',
show: scope.panel['y-axis'],
min: scope.panel.grid.leftMin,
+ index: 1,
+ scale: scope.panel.grid.leftScale,
max: scope.panel.percentage && scope.panel.stack ? 100 : scope.panel.grid.leftMax,
};
@@ -356,16 +359,59 @@ function (angular, $, kbn, moment, _, GraphTooltip) {
if (_.findWhere(data, {yaxis: 2})) {
var secondY = _.clone(defaults);
+ secondY.index = 2,
+ secondY.scale = scope.panel.grid.rightScale;
secondY.position = 'right';
secondY.min = scope.panel.grid.rightMin;
secondY.max = scope.panel.percentage && scope.panel.stack ? 100 : scope.panel.grid.rightMax;
options.yaxes.push(secondY);
+
+ applyLogScale(options.yaxes[1], data);
configureAxisMode(options.yaxes[1], scope.panel.y_formats[1]);
}
+ applyLogScale(options.yaxes[0], data);
configureAxisMode(options.yaxes[0], scope.panel.y_formats[0]);
}
+ function applyLogScale(axis, data) {
+ if (axis.scale !== 2) {
+ return;
+ }
+
+ var series, i;
+ var max = axis.max;
+
+ if (max === null) {
+ for (i = 0; i < data.length; i++) {
+ series = data[i];
+ if (series.yaxis === axis.index) {
+ if (max < series.stats.max) {
+ max = series.stats.max;
+ }
+ }
+ }
+
+ if (max === null) {
+ max = 10000000000;
+ }
+ }
+
+ axis.ticks = [0, 1];
+ var tick = 1;
+
+ while (true) {
+ tick = tick*10;
+ axis.ticks.push(tick);
+ if (tick > max) {
+ break;
+ }
+ }
+
+ axis.transform = function(v) { return Math.log(v+0.1); };
+ axis.inverseTransform = function (v) { return Math.pow(10,v); };
+ }
+
function configureAxisMode(axis, format) {
axis.tickFormatter = function(val, axis) {
return kbn.valueFormats[format](val, axis.tickDecimals, axis.scaledDecimals);
@@ -411,44 +457,44 @@ function (angular, $, kbn, moment, _, GraphTooltip) {
url += scope.panel['y-axis'] ? '' : '&hideYAxis=true';
switch(scope.panel.y_formats[0]) {
- case 'bytes':
- url += '&yUnitSystem=binary';
- break;
- case 'bits':
- url += '&yUnitSystem=binary';
- break;
- case 'bps':
- url += '&yUnitSystem=si';
- break;
- case 'Bps':
- url += '&yUnitSystem=si';
- break;
- case 'short':
- url += '&yUnitSystem=si';
- break;
- case 'joule':
- url += '&yUnitSystem=si';
- break;
- case 'watt':
- url += '&yUnitSystem=si';
- break;
- case 'ev':
- url += '&yUnitSystem=si';
- break;
- case 'none':
- url += '&yUnitSystem=none';
- break;
+ case 'bytes':
+ url += '&yUnitSystem=binary';
+ break;
+ case 'bits':
+ url += '&yUnitSystem=binary';
+ break;
+ case 'bps':
+ url += '&yUnitSystem=si';
+ break;
+ case 'Bps':
+ url += '&yUnitSystem=si';
+ break;
+ case 'short':
+ url += '&yUnitSystem=si';
+ break;
+ case 'joule':
+ url += '&yUnitSystem=si';
+ break;
+ case 'watt':
+ url += '&yUnitSystem=si';
+ break;
+ case 'ev':
+ url += '&yUnitSystem=si';
+ break;
+ case 'none':
+ url += '&yUnitSystem=none';
+ break;
}
switch(scope.panel.nullPointMode) {
- case 'connected':
- url += '&lineMode=connected';
- break;
- case 'null':
- break; // graphite default lineMode
- case 'null as zero':
- url += "&drawNullAsZero=true";
- break;
+ case 'connected':
+ url += '&lineMode=connected';
+ break;
+ case 'null':
+ break; // graphite default lineMode
+ case 'null as zero':
+ url += "&drawNullAsZero=true";
+ break;
}
url += scope.panel.steppedLine ? '&lineMode=staircase' : '';
diff --git a/src/app/panels/graph/graph.tooltip.js b/src/app/panels/graph/graph.tooltip.js
index d4690bea96d..724588c4fd5 100644
--- a/src/app/panels/graph/graph.tooltip.js
+++ b/src/app/panels/graph/graph.tooltip.js
@@ -99,7 +99,7 @@ function ($) {
var group, value, timestamp, hoverInfo, i, series, seriesHtml;
if(dashboard.sharedCrosshair){
- scope.appEvent('setCrosshair', { pos: pos, scope: scope });
+ scope.appEvent('setCrosshair', { pos: pos, scope: scope });
}
if (seriesList.length === 0) {
diff --git a/src/app/panels/graph/module.js b/src/app/panels/graph/module.js
index 1a554f600c9..485e7593b73 100644
--- a/src/app/panels/graph/module.js
+++ b/src/app/panels/graph/module.js
@@ -53,10 +53,12 @@ function (angular, app, $, _, kbn, moment, TimeSeries, PanelMeta) {
y_formats : ['short', 'short'],
// grid options
grid : {
+ leftScale: 1,
leftMax: null,
rightMax: null,
leftMin: null,
rightMin: null,
+ rightScale: 1,
threshold1: null,
threshold2: null,
threshold1Color: 'rgba(216, 200, 27, 0.27)',
@@ -114,6 +116,8 @@ function (angular, app, $, _, kbn, moment, TimeSeries, PanelMeta) {
_.defaults($scope.panel.grid, _d.grid);
_.defaults($scope.panel.legend, _d.legend);
+ $scope.scaleTypes = {'linear': 1, 'log (base 10)': 2};
+
$scope.hiddenSeries = {};
$scope.seriesList = [];
$scope.unitFormats = kbn.getUnitFormats();