Make a bar chart with array (perspective)

Ignition
1

Hi,

I have an integer array with N elements, and want to make a bar chart (could be a line) showing the values in each array index. I´d like the index to be the X axis and the corresponding value to be the Y axis.

Which element and how ?

Thanks in advance.

2

Hi,
You can use Time Series Chart Bar

3

I tried, but when I bind the array as data source, it doesn´t work

image
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4

you need to add a second data which is time and build a data with a list which takes the value of time and pressure for example


[
  {
    "time": 1560469431423,
    "Pressure": 12
  },
  {
    "time": 1560469432423,
    "Pressure": 42
  },
  {
    "time": 1560469433423,
    "Pressure": 81
  },
  {
    "time": 1560469434423,
    "Pressure": 11
  }
]
5

The OP has categories and values, not timestamps and values. The Time Series Chart is the wrong component for the job.

6

Rodrigo, can you show the binding on the data property?
If it is an SQL query please show that as well formatted as code.

7

Hi,

The binding is just a tag. An array of 24+1 integers. I want to show the production of something by hour. Each index will be an hour of the day, and its values will be the total produced. It´s Edge, I don´t have databases, that´s why I'm using tags.

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image1227×968 105 KB

8

Add a script transform to your tag binding:

def transform(self, value, quality, timestamp):
	newData = []
	for i in range(len(value)):
		newData.append({"hour": i, "produced": value[i]})
	return newData

Set
xAxes.0.name : hour
xAxes.0.render : category
yAxes.0.name : produced
xAxes.0.render : value
and do the usual good stuff in series.0....