CODEWITHSUNDEEP
androidandroid-layoutachartengine
user2357673
user2357673

Reputation: 81

how to do time on x axis in achartengine

high guys i store numbers between 1 and 10 in a database and each number is stored with the time it was stored in the database. So i have two sets of data to plot number on the y axis and time on the x axis. however i want to do it in a way so that it plots time in hrs. So say i took 4 numbers in 2 hrs.e.g number 9 at 13:30, 10 at 14:00; 3 at 14:30, 5 at 15:00. plotting the axis is easy but the x axis gives me 2 problems when i want to plot it as a historical event meaning the name of the axis would be hrs and 0 on the axis would be the current time lets say renderer.addTextLabel(0, 15:07); , then 1 on the axis would be the an hour ago or current time minus 60 minuites so renderer.addTextLabel(1, 14:07); and finnaly 2 on the axis would be 2 hrs ago renderer.addTextLabel(2, 13:07);. the two problems i have with my graph is one because current time is a bigger value than the past times when the graph is plotted the x axis starts at 2 and goes down to 0 rather than starting at 0 and going up to two. secondly the graph increments in 100s rather than 60s which represent time. so any values of time than are lets say 13:59 and say 14:00 has a bigger gap between them were the graph assumes there should be values of numbers 13:60 or 13:80 or 13:99 which if we were counting would be true but obviously time goes up to 60 before incrementing the next number. How would i solve this problem? I am new to android and achartengine so please ask me to elaborate if you are unsure. thanks

Upvotes: 1

Views: 1581

Answers (1)

Jackyto
Jackyto

Reputation: 1599

First, declare 2 renderers, one for your datas, one for your chart, and a TimeSeries.

renderer = new XYMultipleSeriesRenderer();
dataset = new XYMultipleSeriesDataset();

timeSeries = new TimeSeries("");
dataset.addSeries(timeSeries);


currentRenderer = new XYSeriesRenderer();
currentRenderer.setLineWidth(2);
currentRenderer.setFillPoints(true);
currentRenderer.setColor(Color.CYAN);
currentRenderer.setShowLegendItem(false);
renderer.addSeriesRenderer(currentRenderer);

Then add datas to your TimeSeries (with a Date, not a String or anything else)

Date date = format.parse(datasList.get(i).first);
timeSeries.add(date, datasList.get(i).second);

Set your chart then, add it to your view and paint it

charter.setChart(ChartFactory.getTimeChartView(view.getContext(),
                charter.getDataset(), charter.getRenderer(), "%tT"));
layout.addView(charter.getChart(), 0, new LayoutParams(
                LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
charter.getChart().repaint();

And that's it, normally you have a wonderful chart with TimeSeries

Upvotes: 2

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