hello I want to create line chart similar to healthkit. For example i have on X axis (Jul 14, 15, 16, 17), Y axis (0, 50, 100) and data set in (x,y) format is ((jul 15, 30),(jul 17, 80))
I try following libraries
https://github.com/Boris-Em/BEMSimpleLineGraph/tree/master/Sample%20Project/SimpleLineChart
https://github.com/core-plot/core-plot
but all populate x axis based on data set. i.e all library only take parameter for data set based on that x axis and y axis labels are populated. Can you please suggest any other library through which I can achieve similar as explain above line chart. Thanks in advance.
Finally i solved my problem using
https://github.com/Boris-Em/BEMSimpleLineGraph/tree/master/Sample%20Project/SimpleLineChart
when there is no value i put (jul 15, BEMNullGraphValue).
Even this you could do it in your existing graph
Consider below example.
- {[0,5],[1,5],[3,5],[4,5]}
See there is no value for 2, so line chart will draw 0-5 to 1-5 then gap then 3-5 to 4-5.
I hope now you could figure out.
Still if you wish then get below graph library.
Do it with https://github.com/danielgindi/Charts
There are many properties like clip, scale, min, max etc for line chart.
Using though properties you could achieve.
https://github.com/danielgindi/Charts/issues/533
Edited answer
After doing some work around, i found the way.
Download sample code
let months = ["July 14", "15", "16", "17", "18", "19", "20"]
let unitsSold = [0.0, 0.0, 0.0, 100.0, 25.0, 50.0, 75.0]
for i in 0..<dataPoints.count {
if !values[i].isZero {
let dataEntry = ChartDataEntry(value: Double(values[i]), xIndex: i)
dataEntries.append(dataEntry)
}
}
Refer attached screen shot
In PNChart create one array of indexes which you want to skip the value. Put condition drawdot funtion on start of for loop of data array if array contain index value then continue.
Related
I integrated SwiftChart library through Cocoapods, and successfully I can able to use swiftChart properties for the line chart. But I want to customize the X-Axis labels as I have some dates(2018/06/12, 2018/06/13, etc..) to display on X-Axis. Could you please guide me on this.
I have integrated the library for my requirement
https://github.com/gpbl/SwiftChart.
You only should read the documentation, I found this code and it may be what you need:
// Use `xLabels` to add more labels, even if empty
chart.xLabels = [0, 3, 6, 9, 12, 15, 18, 21, 24]
// Format the labels with a unit
chart.xLabelsFormatter = { String(Int(round($1))) + "h" }
The before code, it's for adding 'h', on each value, you can make a function to solve it with your requirements.
EDIT
You can make a parallel array, with your required dates i.e ["2018/06/12", "2018/06/13", "2018/06/13","2018/06/13","2018/06/13"] and the array for xLabels i.e [3, 5, 12, 5, 34].. both with the same number of items, and you can replace value for the one this array of dates on the same index..
You have the index on the sugar syntax $0 within the chart.xLabelsFormatter = { }
open var xLabelsFormatter = { (labelIndex: Int, labelValue: Double) -> String in
String(Int(labelValue))
}
Finally, I solved my problem by creating the separate array which contains the same count of actual array objects and used that array to display on x-axis label.
let mainArray = [0, 3, 6, 9, 12,]
let displayArray = ["01/03/18", "012/03/18", "15/03/18", "17/03/18", "20/03/18"]
self.chartView.xLabels = mainArray
self.chartView.xLabelsFormatter = { (labelIndex: Int, labelValue: Double) -> String in
return displayArray[labelIndex]
} self.chartView.add(series)
I am trying to draw Multiple line chart using iOS-Charts danielgindi/Charts library by as show in picture.
Expected Output:
Data1 = [Jun: 34, Jul: 42, Aug: 32, Sep: 30, Oct: 38]
Data2 = [Oct: 38, Nov: 40, Dec: 32, Jan: 40]
let dataSet1 = LineChartDataSet(values: Data1, label: nil)
dataSet1.lineDashLengths =[0]
dataSet1.drawCirclesEnabled = false
let dataSet2 = LineChartDataSet(values: Data2, label: nil)
dataSet2.lineDashLengths =[10]
dataSet2.drawCirclesEnabled = true
let data = LineChartData(dataSets:[dataSet1, dataSet2])
lineChartView?.data = data
I want to draw the first set with solid line and second set with Dotted line.
I am using iOS Charts library. (MultiLineChartView)
The problem which I m facing is the dotted line also start at the beginning of x-Axis. (As shown below)
Could anyone help me on this please?
You must be having minimum and maximum for the x-Axis so you just have to set the starting x-axis for your second set to be the ending x-axis of the first data set. A very good example is included in the examples as CombinedChartViewController. Please try to run the demo and play with the x-Axis of any type of chart,
ChartDataEntry(x: 0.5, y: 30)
How could we plot graphical representation using High Charts where one x-axis value have multiple y-axis value
and for each x-axis value number of y-axis value differs.
I have date on x-axis and on y-axis the readings.
Now, i have data for each date, but the number of reading may differ for different dates. Like for today i have 5 readings and yesterday it was 10 readings.
So i have the data Date vise. and i want to plot it on graph with positive and negative values. I do some RnD for high charts for this, but highcharts dont show the reading receptive with this scenario, or may be i didnt get it. Can anybody help me in this.
Data I have:
1) Date: 1/8/2017
Values:[12,56,-14,35,8]
2) Date: 2/8/2017
Values:[3,9,-4]
3) Date: 3/8/2017
Values:[8,-6,45]
Thank you for the help
You can use the scatter series: https://www.highcharts.com/docs/chart-and-series-types/scatter-chart
Live demo adjusted to your problem: http://jsfiddle.net/kkulig/c6w79bd0/
If you have data composed similarly to this:
var data = [{
date: Date.UTC(2017, 0, 1),
values: [4, 5, 6, -2]
}, {
date: Date.UTC(2017, 0, 2),
values: [3, -7]
}, {
date: Date.UTC(2017, 0, 3),
values: [0, 11]
}];
You can prepare it this way:
var series = {
data: []
};
data.forEach(function(day) {
day.values.forEach(function (value){
series.data.push([day.date, value]);
});
});
When the highstock chart data set has multiple points on the same axis ex:
data: [[0,0], [0, 100], [1, 100], [1,200], [4, 100], [4, 200]]
the point doesn't always choose the highest number by default. It looks like it randomly selects one of the numbers on the same axis.
Here's my fiddler example: http://jsfiddle.net/ceo1y97m/
As you can see when you hover over the different points, it's not always displaying the highest point's Y value. How do I get this to show only the highest point's value?
Edit: Here is the reason that I have multiple x values that are the same:
Let's say the line represents the amount of money you deposit into an account over time. In the line's legend I want to display the amount you've deposited over the period that you're viewing. This would be the furthest point right's Y value minus the furthest point left's Y value. If I don't include the duplicate Y values, this calculation is incorrect.
See updated fiddler to show this error on the legend value (zoom in and out to change the legend values): https://jsfiddle.net/LS384/822/
The two data sets look identical, but the legend values are different, because both points on the same axis aren't displayed.
I'm not sure that this is how the step chart was intended to be used, you should have just 1 value per axis point.
What you could do is filter your data to just keep the highest value for each point
data: [[0,0], [0, 100], [1, 100], [1,200], [4, 100], [4, 200]]
for (var i in data) {
if (filteredData[data[i][0]] == undefined) {
filteredData[data[i][0]] = data[i]
} else {
if (filteredData[data[i][0]][1] < data[i][1]) {
filteredData[data[i][0]] = data[i];
}
}
}
here is your edited filter with the chart looking the same and you desired behaviour http://jsfiddle.net/ceo1y97m/4/
Edit:
I made a workaround, i hid the unfiltered data, used the filtered data for display and gave it the same color as the unfiltered one, and in the function that calculates the difference i use the unfiltered data(ch.series[0].data])
Here is the fiddle with your expected behaviour https://jsfiddle.net/LS384/826/
I would process the data, so you have one point per x value with additional information - multiple values. I treat { x, y } as the information about how the point should be visualised plus add the array with all additional values which allow to make the proper calculations.
This:
[
[0, 0],
[0, 100],
[1, 100],
[1, 200],
[1, 300],
becomes this:
[{
x: 0,
y: 100,
values: [0, 100]
}, {
x: 1,
y: 300,
values: [100, 200, 300]
}]
With points defined as the above, you can access the values via point.options.values and calculate the difference.
example: http://jsfiddle.net/jqdh79vv/
Not able to display data in heat map coming from JSON. Only X and Y axis are shown.
var data1=[
["2016-01-01", 0, 20.0],
["2016-01-01", 1, 9.0],
["2016-01-01", 2, 10.0]
]
[Fidlele link][1]
http://jsfiddle.net/nxgzeo34/2/
Please advise