Please consider following graph :
The above bar graph is built using jfreechart. I have two questions:
1) Values (1,5,4 etc.)are printed on the top but within the bars.How to display these on the top but above the bars?
2)Each value is printed on the bars in horizontal manner. How to display them in proper vertical manner?
Thanks...
You should take a look at ItemLabelPosition, as explained here.
It is a property on the BarRenderer for the given chart. Try experimenting with the different values for the desired result.
Expanding on #Jes's helpful suggestion, you can see how ChartFactory.createBarChart() uses ItemLabelPosition in the relevant source code. More on the label generator parameters may be found here.
Related
I have to build a horizontal bar with chartjs. I already built a few of them but its a bit different. The chart has 2 labels for the yAxis ("Storm Risk", "Ice Risk") and hours for the xAxes. I have to print out for every hour one of these different options with different colors ("Low", "Medium", "Hight") as ye can see in the screenshot attached.
This kind of bar chart usually the values are represented by the length of the bar and its a bit different.
Any suggestion?.
Thanks
The chart you want to implement is a sort of a "heatmap". As of now (Sep. 2018), Heatmap charts are not supported out of the box by Chart.js. However, you can make one out of a stacked bar chart (in this case, probably stacked horizontal bar chart?): make each stack size equal to one another and each item backgroundColor depending on the actual values being represented. Once this is done, you can override ticks and tooltips using with according callbacks. Legend can be implemented by one more bar chart with sample values and colors.
More details can be found in a related GitHub issue: https://github.com/chartjs/Chart.js/issues/4627
Another alternative would be to use a BubbleChart. The strategy would be similar - you would need to make all bubbles same size, but override their colors. However, provided the look in the question, stacked horizontal bar chart will be more suitable.
Another option for those who are still looking is to use chartjs-chart-matrix https://chartjs-chart-matrix.pages.dev/usage.html plugin.
Example of implementation with Chart.js v3: https://www.youtube.com/watch?v=bi04BgvNY6U
I am creating a Line chart and I have set Values on data points property to true, so It's showing values also. The problem is I am using two dimension so values are getting overlapped. This is what I am talking about :
Is there any solutiuon to this problem OR Is there any alternate to this prob ?
You can try to extend the size of your graph if it's possible, if not I don't think there's an other solution to your issue.
If I Were you, I would transform the line chart into a bar chart which is more lisible.
I am trying to show the total at the top of the stacked bar graph. But it is showing very far from the top of bar graph. sorry this might be duplicate question. . Could anyone help me with adding indicator like one in the picture and showing the value at the top of the triangle? TIA
I am able to solve my problem. I added second series that is total of other 2 series and change the chart series type line with markers,gave the color 'No color',hide the legend property and set the label position as top.But I do not know why the value shows below for the first column. this same technique I tried before I am posting my question.But it did not work at that time.Now it works except one value shows below the marker.
Reference:http://sqljason.com/2010/06/display-total-on-top-of-stacked-chart_8589.html
I'm trying to learn myself with data visualization and when I'm going through the bar chart I'm stuck with the following thing.
In the graph there is a vertical black line on each bar in the bar char. What exactly signifies that overlay-ed black line. Thanks for your help
This looks like vertical error bars.
Error bars are a graphical representation of the variability of data
and are used on graphs to indicate the error, or uncertainty in a
reported measurement.
I had the same questions and did some researy with a summary below. Please share your thoughts if any misunderstanding.
The error bars shows the confidence interval Or Standard Deviation.
CI- a range of values that you can be x% certain contains the true mean of the population.
useful link
SD- require to be defined in the code.
i.e.ax = sns.barplot(x="day", y="tip", data=tips, ci="sd")
useful link
I am currently trying to create a graph using AChartEngine containing two y-axis (one to the left, one to the right). Yet, I cannot seem to figure out how I can actually add the second y-Axis. An XYMultipleSeriesRenderer only has got one setYTitle() method.
Has someone ever achieved this and can give me a hint?
Thanks,
Matthias
You can do that, indeed. Please see an example for this here.
The result looks like
.