I am using Flot to draw some bar charts. How do I configure the zoom so that when a user zooms out, the chart will look like the one at the top and not like the one at the bottom? In other words, I don't want the user to continue zooming out when all of the data for the chart is shown. I also want to restrict the chart from displaying anything below 0 on the X axis. See my code and pictures of the charts below:
<#macro barChart2 var formatFunction ticks="" optionLegend="{ show: false }">
var options = {
yaxis: {
tickFormatter: ${formatFunction}
},
series: {
stack: 0,
bars: {
show: true,
barWidth: 0.9,
align: "center"
}
},
grid : {
hoverable: true
},
xaxis: {
<#if "${ticks}" != "">
ticks: ${ticks}
</#if>
mode: "time",
timeformat: "%b %d, %H:%M %P"
},
pan : {
interactive: true
},
legend: ${optionLegend}
};
var plot${var} = $.plot($("#chart${var}"), data, options);
$("#zoomIn${var}").click(function(e) {
e.preventDefault();
plot${var}.zoom();
});
$("#zoomOut${var}").click(function(e) {
e.preventDefault();
plot${var}.zoomOut();
});
</#macro>
I suggest you take a look at the zoomRange and panRange parameters that you can set with the navigation plugin. You specify those for the axes like:
xaxis: { zoomRange: [0.1, 10], panRange: [-10, 10] },
yaxis: { zoomRange: [0.1, 10], panRange: [-10, 10] }
where zoomRange sets the limit for zooming. In this case, the difference between the min and max will never go below 0.1, and it will never exceed 10. panRange tells the content to stay in a certain range, so in this case, neither axis will pan below -10 or above 10.
I'm not sure how you do this with time series data, but try with javascript timestamps to begin with.
Related
I am working with a sample here:
var startDate = new Date(Date.UTC(2016, 6, 28, 0, 0, 0, 0));
var endDate = new Date(Date.UTC(2016, 6, 28, 0, 0, 0, 0));
endDate.setHours(startDate.getHours() + 9);
var dataSet = [{"data":[[1469664000000,0]],"color":"#FF0700"},
{"data":[[1469667600000,0]],"color":"#FF0700"},
{"data":[[1469671200000,0]],"color":"#FF0700"},
{"data":[[1469674800000,0]],"color":"#FF0700"},
{"data":[[1469678400000,0]],"color":"#FF0700"},
{"data":[[1469682000000,0]],"color":"#FF0700"},
{"data":[[1469685600000,0]],"color":"#FF0700"},
{"data":[[1469689200000,0]],"color":"#FF7400"},
{"data":[[1469692800000,0]],"color":"#006900"}];
var options = {
series: {
stack: true,
bars: {
show: true
}
},
bars: {
lineWidth: 0,
align: "center",
barWidth: 1,
horizontal: true,
fill: 1,
},
yaxis: {
axisLabel: "MachineName",
axisLabelUseCanvas: true,
axisLabelFontSizePixels: 12,
axisLabelFontFamily: 'Verdana, Arial',
axisLabelPadding: 3,
ticks: []
},
xaxis: {
axisLabelUseCanvas: true,
axisLabelFontSizePixels: 12,
axisLabelFontFamily: 'Verdana, Arial',
axisLabelPadding: 3,
//ticks: [[0, "1:00"], [1, "2:00"], [2, "3:00"], [3, "4:00"], [4, "5:00"], [5, "6:00"], [6, "7:00"], [7, "8:00"], [8, "9:00"]],
//labelWidth: 10,
//tickLength: 10,
//tickFormatter: formatXAxis,
//tickSize: 360000,
//minTickSize: 1,
//min: 0,
//max: 10
//mode: "time",
//timeformat: "%H:%M",
//minTickSize: [1, "hour"],
////color: "black",
//min: startDate.getTime(),
//max: endDate.getTime()
}
};
$.plot($("#machineStatus"), dataset, options);
I end up with a graph where the xaxis labels are not anything like they should be. See below
The design is an hourly status of a machine (red = not running, green = running, etc.) So the intent was to have the last 9 hours of runtime showing and put x axis labels for the top of the hour (1:00, 2:00, etc.).
Since this is a horizontal stack of multiple data sets, this appears to really confuse the xaxis tick calculation. I tried setting the min/max to equal the start and end times of the dataset, but I would get no graph.
I stopped using the "time" mode, hoping I could use the ticks array and force a set of ticks and labels, but that doesn't work. I tried the tickFormatter to force calculating the ticks, but that didn't work either.
You can see all the things I've tried on the xaxis and have commented out. I actually don't want the ticks to have any relationship to the actual data. I am testing this graph at the hour and minute level, so theoretically my data sets are either 9 or 540 bits of granular information. I still want the xaxis ticks to stay at a fixed set of 9 values spread evenly. Any ideas how I can do that?
FYI, I apologize for no jsfiddle. I've never been able to get one to work.
Update. Selected answer works! Here's a screenshot of a 540 datapoint to the minute level. The dataset is too big to post. Thanks again Raidri
I got it to work with time mode and a vertical bar chart:
Relevant options:
series: {
stack: true,
bars: {
lineWidth: 0,
align: "left",
barWidth: 3600000,
//horizontal: true,
fill: 1,
show: true,
}
},
...
xaxis: {
min: startDate.valueOf(),
max: endDate.valueOf(),
mode: "time",
timeformat: "%H:%M",
...
Also the values for your datapoints are changed to 1 so the bars here have a height of one.
If you change it to minute values, you have to change the barWidth option accordingly.
See this fiddle for the full example.
I am using a line chart. I feed the data the following:
var scheduled = [[51,1700],[52, 1750],[1,1600],[2,1675]];
var actual = [[51,1320],[52, 1550],[1,1575],[2,1600]];
In the above the first number of each set is the week of the year and I am trying to show the last 4 months of data.
However, when the chart is drawn Flot charts re-sorts the data by the first value (lowest to highest) which creates all kinds of issues. Instead of 4 columns in the series there are now 52, and the lines are quite out of whack.
I don't see anything in the documentation that says this is supposed to happen, nor do I see anything that says I can prevent it. However, for the data to be meaningful, the data must not be re-ordered.
Is there a setting I'm unaware of that can stop this behavior?
Edit : Adding plot code
var plot = $.plot('#scheduled-actual-flot-line', [
{
label: 'Scheduled Hours',
data: scheduled,
lines: { show: true, lineWidth: 2, fill: true, fillColor: { colors: [{ opacity: 0.5 }, { opacity: 0.5 }] } },
points: { show: true, radius: 4 }
},
{
label: 'Actual Hours',
data: actual,
lines: { show: true, lineWidth: 2, fill: true, fillColor: { colors: [{ opacity: 0.5 }, { opacity: 0.5 }] } },
points: { show: true, radius: 4 }
}],
{
series: {
lines: { show: true },
points: { show: true },
shadowSize: 0 // Drawing is faster without shadows
},
colors: ['#afd2f0', '#177bbb'],
legend: {
show: true,
position: 'nw',
margin: [15, 0]
},
grid: {
borderWidth: 0,
hoverable: true,
clickable: true
},
yaxis: { ticks: 4, tickColor: '#eeeeee' },
xaxis: { ticks: 12, tickColor: '#ffffff' }
}
);
Flot takes the x values as numbers and displays / sorts them accordingly. If you don't want that, you can use the category mode (see this example and this fiddle with your data).
xaxis: {
//ticks: 12,
tickColor: '#ffffff',
mode: 'categories'
}
PS: 12 ticks are not possibly with your data, as there are only 4 datapoints defined.
That flot reads all data as numbers by default is described here in the documentation.
Flotr examples use a for loop to create random data, so the first index will always be sequential.
[[51,1700],[52, 1750],[1,1600],[2,1675]];
Your arrays show that flotr must be doing a sort on the array before painting the data sets as lines, bar-graphs or whatever.
I can only suggest you create a timestamp from the months and there's a time setting you can in flotr settings to format the dates as you want.
The other way is replace your anomalous data (months) with sequential indices:
var arr = [[51,1700],[52, 1750],[1,1600],[2,1675]];
for(var i=0; i<arr.length; i++) arr[1][0] = i;
Flot is doing exactly what it should do for a line chart (or any type of x-y graph). It's showing the last two points of your dataset on the left because 1 and 2 are indeed less than 51 and 52. I'm guessing that you're trying to show data that crosses a year boundary. You need to make the first two weeks of the second year later than the last two of the first. You could use actual dates instead of week numbers, in which case Flot would handle it fine. That would also give you more flexibility in labeling the x-axis. But as a quick fix, just add 52 to the second year's data, e.g.:
var scheduled = [[51,1700],[52, 1750],[53,1600],[54,1675]];
var actual = [[51,1320],[52, 1550],[53,1575],[54,1600]];
How do I specify my own colors for the bars in a jqPlot stacked bar chart? I am talking about setting different colors for single bars. I have gone through a couple of examples, but all of them use the default colors. Is there a way to explicitly set the colors for the bars in a stacked bar chart?
Here is the code I have now:
var s1=[11,28,22,47,11,11];
var s2=[0,6,3,0,0,0];
var s3=[1,0,3,0,0,0 ];
var dataArray = [s1, s2, s3];
var ticks = bcdarr;
var options = {
title: ' STATUS',
stackSeries: true,
seriesDefaults: {
renderer:$.jqplot.BarRenderer,
pointLabels: {
show: true
},
rendererOptions: {
barWidth: 25,
varyBarColor: true,
},
},
axes: {
xaxis: {
renderer: $.jqplot.CategoryAxisRenderer,
ticks: ticks,
},
yaxis: {
//autoscale: true,
//label: 'Application Count',
min : 0,
tickInterval : 5,
max:50
}
},
axesDefaults: {
tickRenderer: $.jqplot.CanvasAxisTickRenderer ,
tickOptions: {
angle: -30,
fontSize: '10pt'
}
}
};
The best place to look for documentation on how to do things is the API Documentation. It has documentation on each component and plugin and the options available for each.
As almas shaikh implied, the setting which changes the colors of the sections of the bars in a stacked barchart is the seriesColors attribute. This is an array with the colors defined as text strings as you would provide for CSS, or a style.
In the example from which you took the above image to get (working JSFiddle):
You can add:
//Define colors for the stacked bars:
seriesColors: ["#FDF396", "#ABFD96", "#96A0FD"],
The complete function call would be:
$(document).ready(function(){
var s1 = [2, 6, 7, 10];
var s2 = [7, 5, 3, 4];
var s3 = [14, 9, 3, 8];
plot3 = $.jqplot('chart3', [s1, s2, s3], {
//Define colors for the stacked bars:
seriesColors: ["#FDF396", "#ABFD96", "#96A0FD"],
// Tell the plot to stack the bars.
stackSeries: true,
captureRightClick: true,
seriesDefaults:{
renderer:$.jqplot.BarRenderer,
rendererOptions: {
// Put a 30 pixel margin between bars.
barMargin: 30,
// Highlight bars when mouse button pressed.
// Disables default highlighting on mouse over.
highlightMouseDown: true
},
pointLabels: {show: true}
},
axes: {
xaxis: {
renderer: $.jqplot.CategoryAxisRenderer
},
yaxis: {
// Don't pad out the bottom of the data range. By default,
// axes scaled as if data extended 10% above and below the
// actual range to prevent data points right on grid boundaries.
// Don't want to do that here.
padMin: 0
}
},
legend: {
show: true,
location: 'e',
placement: 'outside'
}
});
// Bind a listener to the "jqplotDataClick" event. Here, simply change
// the text of the info3 element to show what series and ponit were
// clicked along with the data for that point.
$('#chart3').bind('jqplotDataClick',
function (ev, seriesIndex, pointIndex, data) {
$('#info3').html('series: '+seriesIndex+', point: '+pointIndex+', data: '+data);
}
);
});
Additional (point labels):
The best place to look for documentation on how to do things is the API Documentation. It has documentation on each component and plugin and the options available for each. [Restated here and at the top of the answer because I only just added the link.]
Documentation for the point labels is in the plugin API documentation for : PointLabels (plugins/jqplot.pointLabels.js).
Specifically, the options to show the point labels are specified in
{
seriesDefaults:{
pointLabels: {show: true}
}
}
To show the labels, but not those that are zero, you would use:
{
seriesDefaults:{
pointLabels: {
show: true,
hideZeros: true
}
}
}
Try this:
Within your jqplot you are missing seriesColors. Use it something like below:
$.jqplot('chart3', [s1, s2, s3], {
seriesColors:['#000000', '#ffffff', '#000000'],
seriesDefaults:{
renderer:$.jqplot.BarRenderer,
blah blah
I am using code below to display some daily statistics:
var data2 = [[[1401897069000, 10], [1401983469000, 20], [1402069869000, 15]]];
$.plot('#pieChart2', data2, {
series: {
bars: {
show: true
},
},
xaxis: {
mode: "time",
timeformat: "%Y/%m/%d"
}
});
Is there any way of setting time axis step because otherwise there are duplicated labels on time axis and bars looks like just lines.
See jsfiddle (Firefox only)
The section "Time Series Data" section of Flot's API.md documents the minTickSize option.
From the documentation:
"...you can specify that you just don't want ticks at a size less than a specific tick size with "minTickSize". Note that for time series, the format is an array like [2, "month"], see the next section."
You can set the minTickSize option as specified in the documentation like so:
$.plot('#pieChart2', data2, {
series: {
bars: {
show: true
},
},
xaxis: {
mode: "time",
timeformat: "%Y/%m/%d",
minTickSize: [1, "day"]
}
}
I've updated your JSFiddle with an example: http://jsfiddle.net/cH29a/3/
I am using flot to create bar charts like
I need to specify a threshold like a line at 750(y axis) for example, to show the limit...
there is one jquery.flot.threshold.js file in flot package, but i dont know how to use it on bar charts.How to do it ?
Seems there was some issues with using the threshold plugin with the current flot release version. If you just want to mark a threshold, it might be easier to use the grid markings option:
$.plot($("#placeholder"), [ d1, d2, d3 ], {
series: {
stack: true,
bars: { show: true, barWidth: 0.6 }
},
grid: {
markings: [ { xaxis: { from: 0, to: 12 }, yaxis: { from: 0, to: 20 }, color: "#6D7B8D" }]
}
});
Produces (fiddle here):