linechart

问题 I am new to Vuejs and i wanna know how to fetch data from my API to display chart. Below is my code, where i have used data as "date and challenge" and have fed data directly to it, but now i want to call my API and feed the data from it to "date and challenge". Code that i have used it to display chart without API: <template> <canvas id="mychart" width="550" height="300"></canvas> </template> <script> export default { name: 'Chart', data: () => ({ date: [ 1600934100.0, 1602009600.0,

问题 I made an application that would show me Max, Minimum, and Average ping when I click "start" in my JFrame application. I made a white box so I could fit a dynamically changing line graph that will be in the same window as my stats, and will update at the same rate as my stats (1 second). No matter how much I google, everybody seems to understand the JFreeChart sample code. I do not understand how to implement that at all. Other tutorials show just the graph as a standalone in its own window.

问题 I made an application that would show me Max, Minimum, and Average ping when I click "start" in my JFrame application. I made a white box so I could fit a dynamically changing line graph that will be in the same window as my stats, and will update at the same rate as my stats (1 second). No matter how much I google, everybody seems to understand the JFreeChart sample code. I do not understand how to implement that at all. Other tutorials show just the graph as a standalone in its own window.

问题 I am trying to get the last seven days on the x-axis of my line-chart (using chartjs). What is the best way to do this? Thanks 回答1: You can instantiate a chart for the last seven days with the following code: let start = new Date(), end = new Date(); start.setDate(start.getDate() - 7); // set to 'now' minus 7 days. start.setHours(0, 0, 0, 0); // set to midnight. new Chart(document.getElementById("chart"), { type: "line", options: { scales: { xAxes: [{ type: "time", time: { min: start, max:

问题 I am trying to get the last seven days on the x-axis of my line-chart (using chartjs). What is the best way to do this? Thanks 回答1: You can instantiate a chart for the last seven days with the following code: let start = new Date(), end = new Date(); start.setDate(start.getDate() - 7); // set to 'now' minus 7 days. start.setHours(0, 0, 0, 0); // set to midnight. new Chart(document.getElementById("chart"), { type: "line", options: { scales: { xAxes: [{ type: "time", time: { min: start, max:

问题 I want to sent a line chart in the body of the E-mail using ASP.Net and C#. I have written a code to show the chart in a div tag. I want to sent the line chart in mail. How to do this? My Code: jQuery var chartData; google.load("visualization", "1", { packages: ["corechart"] }); function Chart() { $.ajax({ url: "HHT_Tracking.aspx/GetData", data: "", dataType: "json", type: "POST", contentType: "application/json; chartset=utf-8", success: function (data) { chartData = data.d; }, error:

问题 I want to sent a line chart in the body of the E-mail using ASP.Net and C#. I have written a code to show the chart in a div tag. I want to sent the line chart in mail. How to do this? My Code: jQuery var chartData; google.load("visualization", "1", { packages: ["corechart"] }); function Chart() { $.ajax({ url: "HHT_Tracking.aspx/GetData", data: "", dataType: "json", type: "POST", contentType: "application/json; chartset=utf-8", success: function (data) { chartData = data.d; }, error:

问题 I want to sent a line chart in the body of the E-mail using ASP.Net and C#. I have written a code to show the chart in a div tag. I want to sent the line chart in mail. How to do this? My Code: jQuery var chartData; google.load("visualization", "1", { packages: ["corechart"] }); function Chart() { $.ajax({ url: "HHT_Tracking.aspx/GetData", data: "", dataType: "json", type: "POST", contentType: "application/json; chartset=utf-8", success: function (data) { chartData = data.d; }, error:

问题 I want to add horizontal upper and lower limit line for Temparature timeseries plot. Lets say upper limit line at 30 and lower limit line at 10. df3.plot(x="Date", y=["Temp.PM", "Temp.AM"],figsize=(20,8)) 回答1: I think this solution can help you import matplotlib.pyplot as plt %matplotlib inline df3.plot(x="Date", y=["Temp.PM", "Temp.AM"],figsize=(20,8)) plt.axhline(30) plt.axhline(10) 回答2: plt.plot(df3['Date'], df3[["Temp.PM", "Temp.AM"]]) plt.axhline(30, color='r') plt.axhline(10, color='b')

问题 I have a dc.js lineChart that is showing the number of events per hour. I would like rather than joining the line between two known values the value should be shown as zero. So for the data below I would like to have the line drop to zero for 10AM {datetime: "2018-05-01 09:10:00", event: 1} {datetime: "2018-05-01 11:30:00", event: 1} {datetime: "2018-05-01 11:45:00", event: 1} {datetime: "2018-05-01 12:15:00", event: 1} var eventsByDay = facts.dimension(function(d) { return d3.time.hour(d