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Labels on d3.js time series chart


Labels on d3.js time series chart

By : user2954115
Date : November 22 2020, 01:01 AM
this one helps. I've been working on a d3.js time series line chart. , Slovak Republic only has 2 data points:
code :
Slovak Republic,SK,Jan 2007,100
Slovak Republic,SK,Jan 2008,105.2
var position = d.values[d.values.length-1].credit;


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Wrong labels in x-axis when using time-series bar chart

Wrong labels in x-axis when using time-series bar chart


By : Niall Chen
Date : March 29 2020, 07:55 AM
like below fixes the issue Date objects is indeed the way to go, but you need to parse the dates in your JSON into such objects as well. So wherever you're loading the data, also parse the dates.
Flot line chart time xaxis series fixed labels

Flot line chart time xaxis series fixed labels


By : Shashi Katariya
Date : March 29 2020, 07:55 AM
Any of those help Flot starts the chart at the first data point and ends it at the last data point. This leads to your ticks being outside of the chart. Set minimum and maximum values for the x axis to display all ticks:
code :
xaxis: {
    //other options
    min: new Date(2017, 1).getTime(),
    max: new Date(2019, 6).getTime()
}
var flotLineOption = {
  series: {
    lines: {
      show: true,
      fill: 0.01
    },
    points: {
      show: true,
      radius: 4
    }
  },
  grid: {
    borderColor: '#eee',
    borderWidth: 1,
    hoverable: true,
    backgroundColor: '#fcfcfc',
    margin: {
      bottom: 50
    }
  },
  tooltip: true,
  tooltipOpts: {
    content: function(label, x, y) {
      var objDate = new Date(x);
      var yearValue = objDate.getFullYear();
      objDate = new Date(x).setMonth(objDate.getMonth() - 1);
      var monthName = new Date(objDate).toLocaleString("en-us", {
        month: "short"
      });
      return monthName + " " + yearValue + ' : ' + y;
    }
  },
  xaxis: {
    tickColor: '#eee',
    tickDecimals: 0,
    tickSize: 6,
    show: true,
    mode: "time",
    timeformat: "%b %y",
    ticks: [new Date(2017, 1).getTime(), new Date(2017, 6).getTime(), new Date(2018, 1).getTime(), new Date(2018, 6).getTime(), new Date(2019, 1).getTime(), new Date(2019, 6).getTime()],
    min: new Date(2017, 1).getTime(),
    max: new Date(2019, 6).getTime()
  },
  yaxis: {
    position: 'left',
    tickColor: '#eee',
    tickDecimals: 0
  },
  shadowSize: 0
};

function getData() {
  var data = [];


  data.push([new Date(2017, 2).getTime(), 8])
  data.push([new Date(2017, 8).getTime(), 2])
  data.push([new Date(2018, 3).getTime(), 9])
  data.push([new Date(2018, 9).getTime(), 3])
  data.push([new Date(2019, 4).getTime(), 7])

  return data;
}

$(function() {

  $.plot($("#flotcontainer"), [{
      data: getData()
    }],
    flotLineOption
  );

  $.plot($("#flotcontainer1"), [{
      data: [
        [new Date(2017, 4).getTime(), 7]
      ]
    }],
    flotLineOption
  );

});
#flotcontainer {
  width: 600px;
  height: 200px;
  text-align: center;
  margin: 0 auto;
}

#flotcontainer1 {
  width: 600px;
  height: 200px;
  text-align: center;
  margin: 50px auto 0 auto;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/flot/0.8.3/excanvas.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/flot/0.8.3/jquery.flot.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/flot/0.8.3/jquery.flot.time.js"></script>
<div id="flotcontainer"></div>
<div id="flotcontainer1"></div>
Format time labels in charts_flutter time series chart

Format time labels in charts_flutter time series chart


By : Thennavan
Date : March 29 2020, 07:55 AM
seems to work fine I have implemented a time series chart in my flutter app which displays energy data over time: , Add a DateTimeAxisSpec for your time (domain) axis.
code :
var chart = new charts.TimeSeriesChart<TimeSeriesEnergy>(
  seriesList,
  domainAxis: new charts.DateTimeAxisSpec(
    tickFormatterSpec: new charts.AutoDateTimeTickFormatterSpec(
      day: new charts.TimeFormatterSpec(
        format: 'dd',
        transitionFormat: 'dd MMM',
      ),
    ),
  ),
  animate: animate,
);
Format time labels in charts_flutter time series chart to include hh:mm:ss

Format time labels in charts_flutter time series chart to include hh:mm:ss


By : ethinton
Date : March 29 2020, 07:55 AM
To fix this issue Because of a setting down in MinuteTimeStepper, there's no point. The smallest interval that you can achieve between labels appears to be 5 minutes. The MinuteTimeStepper defaults to intervals of 5, 10, 15, 20 and 30 minutes.
code :
class MinuteTimeStepper extends BaseTimeStepper {
  static const _defaultIncrements = const [5, 10, 15, 20, 30];
  new TimeSeriesSales(new DateTime(2018, 8, 22, 13, 00, 00), 15),
  new TimeSeriesSales(new DateTime(2018, 8, 22, 13, 00, 30), 5),
  new TimeSeriesSales(new DateTime(2018, 8, 22, 13, 01, 00), 25),
  new TimeSeriesSales(new DateTime(2018, 8, 22, 13, 01, 30), 20),
  new TimeSeriesSales(new DateTime(2018, 8, 22, 13, 02, 00), 10),
        minute: new charts.TimeFormatterSpec(
          format: 'mm', // or even HH:mm here too
          transitionFormat: 'HH:mm',
        ),
How to make a grouped multibar time series chart in altair with DATE on the bottom and Column labels in a legend or popu

How to make a grouped multibar time series chart in altair with DATE on the bottom and Column labels in a legend or popu


By : user2996626
Date : March 29 2020, 07:55 AM
seems to work fine You can create a grouped bar chart using a combination of encodings and facets, and you can adjust the axis titles and scales to customize the appearance. Here is an examle (replicating https://vega.github.io/editor/#/examples/vega/grouped-bar-chart in Altair, as you mentioned in your comment):
code :
import altair as alt
import pandas as pd

data = pd.DataFrame([
    {"category":"A", "position":0, "value":0.1},
    {"category":"A", "position":1, "value":0.6},
    {"category":"A", "position":2, "value":0.9},
    {"category":"A", "position":3, "value":0.4},
    {"category":"B", "position":0, "value":0.7},
    {"category":"B", "position":1, "value":0.2},
    {"category":"B", "position":2, "value":1.1},
    {"category":"B", "position":3, "value":0.8},
    {"category":"C", "position":0, "value":0.6},
    {"category":"C", "position":1, "value":0.1},
    {"category":"C", "position":2, "value":0.2},
    {"category":"C", "position":3, "value":0.7}
])

text = alt.Chart(data).mark_text(dx=-10, color='white').encode(
    x=alt.X('value:Q', title=None),
    y=alt.Y('position:O', axis=None),
    text='value:Q'
)

bars = text.mark_bar().encode(
    color=alt.Color('position:O', legend=None, scale=alt.Scale(scheme='category20')),
)

(bars + text).facet(
    row='category:N'
).configure_header(
    title=None
)
import altair as alt
import pandas as pd

data = pd.DataFrame({
    'DATE': pd.date_range('2019-01-01', freq='D', periods=4),
    'REVENUE': [100, 200, 150, 50],
    'COST': [150, 125, 75, 80],
}).melt('DATE', var_name='KEY', value_name='VALUE')

alt.Chart(data).mark_bar().encode(
    x='yearmonthdate(DATE):O',
    y='VALUE',
    color='KEY',
    tooltip=['KEY', 'VALUE'],
)
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