format ( 'Maximum on scale: ' +Ĭheck out the entire code for this version on CodePen. We add a block element and give it an ID so we can reference it later: JavaScript Linear Gauge html, body, #container %' ). The first thing we need to do is make an HTML page that will hold our visualization. Let’s look through each of these steps in detail below. Write the JavaScript code for the chart.Include the necessary JavaScript files.These are the basic steps for creating a linear gauge chart: The Steps for Making a JavaScript Linear Gauge Follow this tutorial to learn how we build this interesting and informative linear gauge chart with JavaScript. Here’s a sneak peek at the final linear gauge chart. The linear gauge visualization we’ll be building The mercury thermometer - consisting of minor ticks that displays the temperature with the pointer value - is a classic example of a linear gauge chart.
The several types of linear gauges are thermometer chart, bullet chart, tank chart and LED chart. The linear gauge chart type is an effective visual representation for displaying how close or far the values are from the desired data point. The pointer can be a needle or a line with a marker of any shape like a circle, square, rectangle or triangle. The pointer position indicates the current value of the metric.Ī gauge chart can display a single value or multiple values using an individual pointer or a combination of markers. The minimum and maximum values of the data range can be set over the axes according to the data being represented.
Data visualization is particularly useful for identifying trends, interpreting patterns, and communicating complex ideas to the target audience.Ī linear gauge chart represents a vertical or horizontal linear scale that shows the required values, with a color scale along with single or multiple pointers. Data visualization is an invaluable tool, given the vast amount of data being created and numerous possibilities for gleaning information from data.
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