How to dynamically update labels in chart.js using data an array of time_stamp values
I am trying to display some data over time. The data is fetched from db periodically including time_stamp and battery level. What I want is to display time_stamp as labels on x-axix and the corresponding battery_level plotted against each time_stamp value on y-axis.
Current time can't be used as time_stamp is not synchronized with current time.
Here is current display of chart: 
I tried but not able to use time_stamp array as labels and dynamically updating. How can I do this?
Here is my code:
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx,
type: 'line',
data:
labels: [date_time_Array], //array of time stamp
datasets: [
label: 'Battery_Voltage',
data: battArray,
backgroundColor: "rgba(255,153,0,0.4)"
]
,
options:
scales:
yAxes: [
ticks:
beginAtZero:true
]
);
javascript html charts
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
add a comment |
I am trying to display some data over time. The data is fetched from db periodically including time_stamp and battery level. What I want is to display time_stamp as labels on x-axix and the corresponding battery_level plotted against each time_stamp value on y-axis.
Current time can't be used as time_stamp is not synchronized with current time.
Here is current display of chart:
I tried but not able to use time_stamp array as labels and dynamically updating. How can I do this?
Here is my code:
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx,
type: 'line',
data:
labels: [date_time_Array], //array of time stamp
datasets: [
label: 'Battery_Voltage',
data: battArray,
backgroundColor: "rgba(255,153,0,0.4)"
]
,
options:
scales:
yAxes: [
ticks:
beginAtZero:true
]
);
javascript html charts
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
add a comment |
I am trying to display some data over time. The data is fetched from db periodically including time_stamp and battery level. What I want is to display time_stamp as labels on x-axix and the corresponding battery_level plotted against each time_stamp value on y-axis.
Current time can't be used as time_stamp is not synchronized with current time.
Here is current display of chart:
I tried but not able to use time_stamp array as labels and dynamically updating. How can I do this?
Here is my code:
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx,
type: 'line',
data:
labels: [date_time_Array], //array of time stamp
datasets: [
label: 'Battery_Voltage',
data: battArray,
backgroundColor: "rgba(255,153,0,0.4)"
]
,
options:
scales:
yAxes: [
ticks:
beginAtZero:true
]
);
javascript html charts
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
I am trying to display some data over time. The data is fetched from db periodically including time_stamp and battery level. What I want is to display time_stamp as labels on x-axix and the corresponding battery_level plotted against each time_stamp value on y-axis.
Current time can't be used as time_stamp is not synchronized with current time.
Here is current display of chart:
I tried but not able to use time_stamp array as labels and dynamically updating. How can I do this?
Here is my code:
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx,
type: 'line',
data:
labels: [date_time_Array], //array of time stamp
datasets: [
label: 'Battery_Voltage',
data: battArray,
backgroundColor: "rgba(255,153,0,0.4)"
]
,
options:
scales:
yAxes: [
ticks:
beginAtZero:true
]
);
javascript html charts
javascript html charts
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
asked Nov 12 '18 at 15:52
XCeptableXCeptable
58141434
58141434
add a comment |
add a comment |
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