I cant figure out why my labels are not aligned with my chart values in the MP Android bar chart.
there are just four bars, and each corresponds to a day (therefore Day 1, Day 2, Day 3, Day 4).
I have followed the documentation available, and looked at several similar questions, but still fail to match the labels to their values.
the code is use is as follows:
View v = inflater.inflate(R.layout.fragment_g_h5_fragment, container, false);
barChart = v.findViewById(R.id.new_fragment5_chart);
ArrayList<BarEntry> chartvals = new ArrayList<>();
chartvals.add(new BarEntry(1, 10F));
chartvals.add(new BarEntry(2, 20F));
chartvals.add(new BarEntry(3, 15F));
chartvals.add(new BarEntry(4, 18F));
BarDataSet barDataSet = new BarDataSet(chartvals, "");
ArrayList<String> labels = new ArrayList<>();
labels.add("Day 1");
labels.add("Day 2");
labels.add("Day 3");
labels.add("Day 4");
//xvals.add("Day 5");
XAxis xaxis = barChart.getXAxis();
xaxis.setValueFormatter(new IndexAxisValueFormatter(labels));
xaxis.setLabelCount(labels.size());
xaxis.setGranularity(1f);
iBarDataSets.clear();
iBarDataSets.add(barDataSet);
barData = new BarData(iBarDataSets);
barChart.clear();
barChart.setData(barData);
barChart.invalidate();
return v;
}
see image of graph
this is the image of result, where Day 1 label is missing, and labels start from Day2. also Day 4 bar does not have any corresponding label.
I have looked at several examples on stackoverflow including this one below. i remain unsuccessful
https://stackoverflow.com/questions/47280607/mpandroidchart-value-formatter-out-of-array-range
Any guidance to fix this is greatly appreciated
Related
I'm new to Google Charts and I'm struggling to solve this.
I have a datatable (called "result" in the code)
Name Liquidity percent
a 1.3 20%
b 2.0 20%
c 3.4 20%
d 4 20%
e 5 20%
My pie chart is set to show 5 segments of equal size - 20% - and each segment is blue
I have set a 'Number Range Filter' control wrapper to filter the liquidity - when i set the control to the range 1 to 4 the pie moves to 4 equal sized segments.
BUT... I don't want it to do this. Instead of 1 segment disappearing I want the 5 segments to remain visible and the colour of the filtered segment to change to be a different colour.
The aim being that I can see visually a total percentage that falls within the number filter.
EDIT:
So I've had a mess about and this is as far as I've got incorporating dlaliberte's comment below.
function drawChart3(chartData3) {
var result = google.visualization.arrayToDataTable(chartData3,false); // 'false' means that the first row contains labels, not data.
var chart3 = new google.visualization.ChartWrapper({
'chartType': 'PieChart',
'containerId': 'chart3_div',
'dataTable': result,
'options': {
'width': 500,
'height': 500,
'legend': {position: 'none'},
'pieSliceText': 'none',
'colors': ['blue']
},
'view': {'columns': [0 , 1]}
});
var liquidityDT = new google.visualization.DataTable();
// Declare columns
liquidityDT.addColumn('number', 'Liquidity');
// Add data.
liquidityDT.addRows([
[1],
[2],
[3],
[4],
[5],
]);
// Create a range slider, passing some options
var liquidityRangeSlider = new google.visualization.ControlWrapper({
'controlType': 'NumberRangeFilter',
'containerId': 'filter3_div',
'dataTable': liquidityDT,
'options': {
'filterColumnLabel': 'Liquidity',
'minValue': 0,
'maxValue': 5
}
});
liquidityRangeSlider.draw();
chart3.draw();
google.visualization.events.addListener(liquidityRangeSlider, 'statechange', setChartColor);
function setChartColor(){
var state = liquidityRangeSlider.getState();
var stateLowValue = state.lowValue;
var stateHighValue = state.highValue;
for (var i = 0; i < result.getNumberOfRows(); i++) {
var testValue = result.getValue(i,2);
if (testValue < stateLowValue || testValue > stateHighValue){
alert("attempting to set colors")
//this bit I have no clue how to change the color of the table row currently being iterated on
chart3.setOption({'colors' : ['red']});
}
}
chart3.draw();
}
}
so it produces the pie chart with 5 blue segments. I can move the number filter and it fires the listener event but I can't get it to affect anything on the piechart (Chart3) - The code currently attempts just to change the whole chart to RED but that isn't even working never mind the just colouring the filtered segments
So how do I effect the changes into Chart3 and how do I only effect the filtered segments?.
any clues welcome?
thanks
You can (and must, for your application) use a NumberRangeFilter outside of a Dashboard because it will otherwise always do the data filtering. Instead, just listen for the change events on the NumberRangeFilter, get its current state, and then iterate through the colors array for your chart to set the appropriate colors. You'll have to draw the chart again with the updated colors. Here is the loop to set the colors and redraw.
var colors = [];
for (var i = 0; i < result.getNumberOfRows(); i++) {
var color = (testValue < stateLowValue || testValue > stateHighValue) ? 'red' : 'blue';
colors.push(color);
}
chart3.setOption('colors', colors);
chart3.draw();
In my app i use ios-charts library (swift alternative of MPAndroidChart).
All i need is to display line chart with dates and values.
Right now i use this function to display chart
func setChart(dataPoints: [String], values: [Double]) {
var dataEntries: [ChartDataEntry] = []
for i in 0..<dataPoints.count {
let dataEntry = ChartDataEntry(value: values[i], xIndex: i)
dataEntries.append(dataEntry)
}
let lineChartDataSet = LineChartDataSet(yVals: dataEntries, label: "Items count")
let lineChartData = LineChartData(xVals: dataPoints, dataSet: lineChartDataSet)
dateChartView.data = lineChartData
}
And this is my data:
xItems = ["27.05", "03.06", "17.07", "19.09", "20.09"] //String
let unitsSold = [25.0, 30.0, 45.0, 60.0, 20.0] //Double
But as you can see - xItems are dates in "dd.mm" format. As they are strings they have same paddings between each other. I want them to be more accurate with real dates. For example 19.09 and 20.09 should be very close. I know that i should match each day with some number in order to accomplish it. But i don't know what to do next - how i can adjust x labels margins?
UPDATE
After small research where i found out that many developers had asked about this feature but nothing happened - for my case i found very interesting alternative to this library in Swift - PNChart. It is easy to use, it solves my problem.
The easiest solution will be to loop through your data and add a ChartDataEntry with a value of 0 and a corresponding label for each missing date.
In response to the question in the comments here is a screenshot from one of my applications where I am filling in date gaps with 0 values:
In my case I wanted the 0 values rather than an averaged line from data point to data point as it clearly indicates there is no data on the days skipped (8/11 for instance).
From #Philipp Jahoda's comments it sounds like you could skip the 0 value entries and just index the data you have to the correct labels.
I modified the MPAndroidChart example program to skip a few data points and this is the result:
As #Philipp Jahoda mentioned in the comments the chart handles missing Entry by just connecting to the next data point. From the code below you can see that I am generating x values (labels) for the entire data set but skipping y values (data points) for index 11 - 29 which is what you want. The only thing remaining would be to handle the x labels as it sounds like you don't want 15, 20, and 25 in my example to show up.
ArrayList<String> xVals = new ArrayList<String>();
for (int i = 0; i < count; i++) {
xVals.add((i) + "");
}
ArrayList<Entry> yVals = new ArrayList<Entry>();
for (int i = 0; i < count; i++) {
if (i > 10 && i < 30) {
continue;
}
float mult = (range + 1);
float val = (float) (Math.random() * mult) + 3;// + (float)
// ((mult *
// 0.1) / 10);
yVals.add(new Entry(val, i));
}
What I did is fully feed the dates for x data even no y data for it, and just not add the data entry for the specific xIndex, then it will not draw the y value for the xIndex to achieve what you want, this is the easiest way since you just write a for loop and continue if you detect no y value there.
I don't suggest use 0 or nan, since if it is a line chart, it will connect the 0 data or bad things will happen for nan. You might want to break the lines, but again ios-charts does not support it yet (I also asked a feature for this), you need to write your own code to break the line, or you can live with connecting the 0 data or just connect to the next valid data.
The down side is it may has performance drop since many xIndex there, but I tried ~1000 and it is acceptable. I already asked for such feature a long time ago, but it took lot of time to think about it.
Here's a function I wrote based on Wingzero's answer (I pass NaNs for the entries in the values array that are empty) :
func populateLineChartView(lineChartView: LineChartView, labels: [String], values: [Float]) {
var dataEntries: [ChartDataEntry] = []
for i in 0..<labels.count {
if !values[i].isNaN {
let dataEntry = ChartDataEntry(value: Double(values[i]), xIndex: i)
dataEntries.append(dataEntry)
}
}
let lineChartDataSet = LineChartDataSet(yVals: dataEntries, label: "Label")
let lineChartData = LineChartData(xVals: labels, dataSet: lineChartDataSet)
lineChartView.data = lineChartData
}
The solution which worked for me is splitting Linedataset into 2 Linedatasets. First would hold yvals till empty space and second after emptyspace.
//create 2 LineDataSets. set1- till empty space set2 after empty space
set1 = new LineDataSet(yVals1, "DataSet 1");
set2= new LineDataSet(yVals2,"DataSet 1");
//load datasets into datasets array
ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
dataSets.add(set1);
dataSets.add(set2);
//create a data object with the datasets
LineData data = new LineData(xVals, dataSets);
// set data
mChart.setData(data);
i have a plotmodel with 2 different lineSeries.
In the first lineSeries can be values between 1000 and 10000.
In the second lineSeries are values between 1 and 10.
So when i plot this I can see the first lineSeries very well, but the second one is just at the bottom.
So I defined two different LinearAxis, one for the right and one for the left side.
m.Axes.Add(new LinearAxis { Position = AxisPosition.Left,Minimum = 0, Maximum = maxPointValue1 });
m.Axes.Add(new LinearAxis { Position = AxisPosition.Right, Minimum = 0, Maximum = maxPointValue2 });
Is it possible to bind the first series to the left LinearAxis and the second to the right Axis?
So that the second series is not at the bottom?
Thanks in advance
Michael
Indeed there is my friend.
On your second axis, this case your right, you need to define a key.
var rightAxis = new OxyPlot.Axes.LinearAxis()
{
Key = "secondary",
Position = AxisPosition.Right,
// And then the rest
}
Now when you include a series, you give that the same key
yourLineSeries.XAxisKey = "secondary";
Now when your series is added, it should use your right axis.
Hope this helps!
In Adobe Edge Animate, how do I get the name of the label that corresponds to a given time? I've seen that I can get the current time as an integer using
sym.getPosition()
but if there's a label at that position, how do I get the label as a string?
function getLabel() {
var stage = sym.getComposition().getStage();
var labels = stage.timelines['Default Timeline'].labels;
var currentLabel;
var currentPosition = stage.getPosition();
$.each( labels, function( label, position ){
if (position <= currentPosition) currentLabel = label;
});
return currentLabel;
}
console.log( getLabel() );
this will return the label on (or next previous to) the current position.
For those of us here looking for a Adobe Animate 2019 solution (like I was), it's similar, but slightly different:
function getLabel(_this) {
var currentLabel;
var currentPosition = _this.currentFrame;
_this.labels.forEach(function( label, index ){
if (label.position <= currentPosition) currentLabel = label.label;
});
return currentLabel;
}
Your position on the timeline is easier to get, and the labels object is organized differently. (Also jQuery is unavailable.)
I need to delete the margins between my lines and plot gap.
I decided to use the startOnTick and endOnTick property but in this case line's points in the gap are not seen or seen only part of them.
Please, help if you know how, of course)))
You can set maxPadding and minPadding within chart options provided to the constructor.
Or you can use setExtremes(min, max) after instantiate the chart for dynamic values.
var myChart = new Highchart.chart(options),
extremes = myChart.xAxis[0].getExtremes(),
minPadding = 20,
maxPadding = 20;
myChart.xAxis[0].setExtremes(extremes.dataMin - minPadding, extremes.dataMax + maxPadding);