I am using Chart.js to generate maps and have customised it to a good extent. But I am not able to remove the vertical grid line no matter what. Has anyone come across a situation like this? Help much appreciated.
JavaScript
var ChartDataHome = {
labels: ["", "NOV", "DEC", "JAN", "FEB"],
datasets: [{
strokeColor: "rgba(255.255,255,1)",
pointColor: "rgba(159,209,154,1)",
pointStrokeColor: "rgba(255,255,255,1.00)",
data: [4.5, 8.8, 7.5, 9.5, 7.8, 9]
}]
};
var step = 2;
var max = 10;
var start = 0;
ChartOptionsHome = {
scaleLabel: "<%= value + ' K ' %>",
pointDot: false,
bezierCurve: false,
scaleOverride: true,
scaleSteps: 10,
scaleSteps: Math.ceil((max - start) / step),
scaleStepWidth: step,
scaleStartValue: start,
scaleShowGridLines: true,
scaleGridLineWidth: 0,
scaleGridLineColor: "rgba(0,0,0,0.1)",
datasetFill: false,
animation: true,
animationSteps: 60,
scaleFontColor: "#ffffff",
scaleFontSize: 14,
scaleLineColor: "rgba(255,255,255,1)",
datasetStrokeWidth: 6,
responsive: true,
}
if ($("#chartHome")[0]) {
DrawTheChart(ChartDataHome, ChartOptionsHome, "chartHome", "Line");
}
The following applies to Chart.js 2.*.
If you only have one x-axis, whether the vertical grid lines (that are related to this x-axis) are displayed or not, is specified by the boolean value of options.scales.xAxes[0].gridLines.display. To be more precise, the following chart options disable the display of vertical grid lines for the single x-axis case.
options : {
scales : {
xAxes : [ {
gridLines : {
display : false
}
} ]
}
}
There's a new global option that was released with the new version of Chart.js two days ago.
var options = {
scaleShowVerticalLines: false
}
The Above answers seem outdated since they did not work in ChartJs 3.4.1 (probably lower versions as well) for me.
You can now use the following:
options: {
scales: {
x: {
grid: {
display: false
}
},
}
}
It's self-explanatory, but to remove horizontal lines, you can replace the x with y.
options : {
scales: {
yAxes: [{
gridLines: {
lineWidth: 0,
color: "rgba(255,255,255,0)"
}
}]
}
};
Charts.js v2.0
try "scaleShowGridLines" : false,
I think you can seperate x and y axis.
axes: {
xaxis: {
ticks: ticks,
tickOptions: {showGridline:false}
},
yaxis: {
tickOptions: {showGridline:true}
}
}
Hope this can help you.
Simply write
options:{
grid:{
show: false
},
}
It will solve your problem
Related
I am working with the chart.js module in order to plot some data and am using the chartjs-plugin-zoom in order to enable zooming and panning however although the zooming works the labels on the x axis will not change for whatever reason.
I have seen similar questions but they all dealt with time series data and therefore the advice was unhelpful.
Here is the plot zoomed out:
and here is it zoomed in:
The key thing to notice is how the labels on the y axis have changed but the x axis labels have not changed. Here is the relevant config variable of the chart:
const config3 = {
type: 'line',
data: {
labels: [I ran out of chars but this is just a very long list of numbers in this format: 1,2,3,4,5],
datasets: [
{
label: "",
backgroundColor: '#'+Math.floor(Math.random()*16777215).toString(16),
borderColor: '#0071BC',
data: [I ran out of chars but this is just a very long list of numbers in this format: 1,2,3,4,5],
fill: false,
borderWidth: 1,
},
],
},
options: {
responsive: true,
title: {
display: true,
text: 'Peak: -1.2188'
},
tooltips: {
mode: 'index',
intersect: false,
},
hover: {
mode: 'nearest',
intersect: true
},
scales: {
xAxes: [{
display: true,
scaleLabel: {
display: true,
labelString: 'Frequency (Hz)'
},
ticks:{
autoSkip: true,
maxTicksLimit: 20
},
}],
yAxes: [{
display: true,
scaleLabel: {
display: true,
labelString: 'Amplitude'
}
}],
},
plugins:{
zoom: {
pan: {
enabled: true,
mode: 'xy',
speed: 20,
threshold: 10,
},
zoom: {
enabled: true,
drag: false,
mode: "xy",
speed: 0.1,
// sensitivity: 0.1,
}
}
},
elements: {
point:{
radius: 0
}
}
}
};
If needed I can provide more code but I imagine the mistake is probably contained in the config. I tried changing zoom.mode to be 'x' but that did not work.
In case someone else comes along this I figured out a solution that is pretty unintuitive.
The first problem is the way that labels are dealt with in chart.js and because they are treated as categories not x data the way that I thought they were. Therfore first you must pass your data in as coordinates in this format:
(as shown in this documentation: https://www.chartjs.org/docs/latest/charts/line.html)
data: [{
x: 10,
y: 20
}, {
x: 15,
y: 10
}]
And delete the labels variable.
However this will not work with line charts despite what the documentation says. To get around this you can set: type: 'scatter' and inside the dataset write showLine: true
This will generate a line plot where the x labels are auto generated and zooming will work perfectly.
I also think there was a performance boost which is a nice bonus.
current situation
chart
what i want : chart
I build a mixed chart with lines and bars. I have problem with lines.
Lines not starting at zero.
Here is my codes;
https://jsfiddle.net/ameydan/vb4fsyqp/31/
` options: {
legend: {
display: false,
position: 'top',
},
elements: {
point: {
radius: 0
}
},
scales: {
yAxes: [{
stacked: true,
ticks: {
beginAtZero: true
}
}
],
xAxes: [{
stacked: true,
ticks: {
beginAtZero: true
}
}
]
}
}`
thanks in advance.
beginAtZero : true , not solved problem.
That is cause you setted stacked to true.
scales: {
yAxes: [{
stacked: **false**,
ticks: {
beginAtZero: true
}
}
],
xAxes: [{
stacked: true,
ticks: {
beginAtZero: true
}
}
]
}
EDIT:
Second thought coming from => https://www.chartjs.org/docs/latest/charts/mixed.html
At this point we have a chart rendering how we'd like. It's important to note that the default options for a line chart are not merged in this case. Only the options for the default type are merged in. In this case, that means that the default options for a bar chart are merged because that is the type specified by the type field.
I found a solution!
Just add this :
myChart.options.scales.xAxes[0].offset = false;
myChart.update();
The only counterpart is that if there's data # index 0 of a bar dataset, it will be only half drawn and the last one as well as shown here : https://jsfiddle.net/0qsh8znu/1/
I had the same issue. When I followed #rOulito 's solution, I found that the lack of offset for my line graph made it no longer line up with the data points of my bar graph, so that didn't work, sadly.
My solution was to follow the docs for a chartjs plugin for annotations
This is how I drew a line from the first data point of my line graph to the bottom left of the graph:
let options = {
plugins: {
annotation: {
annotations: {
line1: {
type: 'line',
yMax: 50000,
xMax: 0,
borderColor: 'black',
borderWidth: 3,
},
},
},
},
};
Edit: The answer below was answered partially, but it helped me get to the final solution. The Fiddle has been updated with what I wanted.
Here's a radar chart I'm working on: https://jsfiddle.net/bigtrouble77/02p81jhr/4/
Chart.defaults.global.defaultFontColor = "#eee";
var radarData = {
labels: [ "Passing", "Positioning", "Stickhandling", "Wristship",
"Determination", "Acceleration", "Speed" ],
datasets: [
{
label: false,
data: [4, 6, 2, 3, 7, 9, 8],
backgroundColor: "rgba(220,220,220,0.2)",
borderColor: "#eee",
borderWidth: 1
}
]
};
var radarOptions = {
responsive: true,
maintainAspectRatio: true,
title: {
display: false
},
legend: {
display: false,
}
};
var ctx5 = document.getElementById("radarChart").getContext("2d");
new Chart(ctx5, { type: 'radar', data: radarData, options: radarOptions });
I have had a very difficult time finding any info on how to configure this chart to do the following:
increase the font size of the text
change the color of the "web" lines
remove the unsightly vertical boxes
change the scale to 1-20, so that 20 is always the highest level in the chart, not the highest number in the data set.
I've not been able to find any info in the docs on how to do any of this. I've had some success using older versions of Chart.js, but the api seems to have changed significantly so none of that works with the latest version of Chart.js. Any help would be greatly appreciated.
Simply replace with :
var radarOptions = {
scale:{
pointLabels: {
fontSize: 20
},
},
responsive: true,
maintainAspectRatio: true,
title: {
display: false
},
legend: {
display: false,
}
};
I am expecting pretty weird problem with flot v.0.7. I have multiple axes, configured like that:
var plotData = [
{ data: data1 },
{ data: data2, yaxis: 2 }];
var options = {
selection: { mode: "x" },
xaxis: { mode: "time" },
yaxis: [
{ min: 0 },
{
min: 0,
position: "right",
zoomRange: false,
alignTicksWithAxis: 1,
tickFormatter: formatter,
}
],
grid: { markings: weekendAreas },
zoom: { interactive: true },
grid: {
clickable: true,
hoverable: true,
borderWidth: 1,
},
legend: { show: false },
};
var plot = $jq.plot(container, plotData, options);
But what I get is that both Y series are located on the right (not only second Y series). There is no formatter for my second series tick. Y values can be less then zero, if zooming. If I don't use array type for yaxis and define it as it would only be one series, then everything works fine. What am I doing wrong?
Instead of yaxis: [ ... ], use yaxes: [ ... ].
See the section of the docs entitled Multiple Axes for more info.
I have a figure including two lines (one horizontal line, and one parabolic curve), and I would like to show the value of the crossing over point as well as label it with text "MSY". I tried to use the option pointLabels, but it seemed like I did not find the right way. Can anyone give me some hints? Here is the demo of the problem.
jquery code:
$(document).ready(function() {
$.jqplot.config.enablePlugins = true;
var s1 = [[0.0, 0.0], [1.0, 0.036], [2.0, 0.064], [3.0, 0.084], [4.0, 0.096], [5.0, 0.1], [6.0, 0.096], [7.0, 0.084], [8.0, 0.063], [9.0, 0.036], [10.0, 0.0]];
$.jqplot('chart1', [s1], {
seriesDefaults: {
showMarker: false,
pointLabels: {
show: false
}
},
axes: {
xaxis: {
label: 'X label',
pad: 0
},
yaxis: {
label: 'Y label',
labelRenderer: $.jqplot.CanvasAxisLabelRenderer
}
},
legend: {
show: true,
location: 'ne',
placement: 'inside',
fontSize: '11px'
},
canvasOverlay: {
show: true,
objects: [
{
horizontalLine: {
y: 0.1,
color: 'rgb(100, 55, 124)',
show: true,
}}
]
},
pointLabels: {
show: true,
labels: [[5, 0.10]],
hideZeros: true
}
})
})
There is no straight solution but assuming the parabola to be uniform. I just made some assumptions to calculate the vertex of a parabola. Its just an approximation .And prepared an array that could be feeded to Series label.
var k = Math.round(s1.length / 2); //Assuming your Parabola to be uniform
var l = [];
var i=0;
while(i<(k-1))
{
l.push("");
i++;
}
l.push('MSY');
Now we have the l array now I would feed it to the series option so as to get the required result.
series: [
{
pointLabels: {
show: true,
labels: l
}}],
I have made the necessary changes in fiddle and updated it http://jsfiddle.net/JWhmQ/292/ .
I would recommend you to find a small plugin or build a small script which would give you the tip or vertex of the parabola and use the above for that. It would solve your problem.