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6 min readTo visualize an event timeline in d3.js, you can follow these steps:Set up the necessary JavaScript libraries and dependencies, including d3.js, on your webpage or application. Define the dimensions of the timeline chart, including the width and height of the container element. Create an SVG element within the container element using d3.js. Set the width and height attributes of the SVG element to match the dimensions defined earlier.
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8 min readThe Ease of Movement (EMV) is a technical indicator used to measure the ease or difficulty of price movement in the financial markets. It was developed by Richard W. Arms Jr. and was intended to provide insight into the relationship between price and volume.The interpretation of EMV involves understanding its calculation and the signals it generates. The EMV calculation involves two main components: the box ratio and the distance moved.
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10 min readCreating a hierarchical bar chart in d3.js involves several steps. Here's how you can do it:Step 1: Set up your HTML file by creating a container element for the chart. <div id="chart"></div> Step 2: Include the d3.js library in your HTML file. <script src="https://d3js.org/d3.v7.min.js"></script> Step 3: Define the dimensions and margins for your chart. const margin = { top: 20, right: 20, bottom: 30, left: 40 }; const width = 600 - margin.
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8 min readTo load a TSV (Tab-Separated Values) file for use with D3.js, you can follow these steps:First, you need to include the D3.js library in your HTML file. You can either download it and host it locally or link to a hosted version, like this: <script src="https://d3js.org/d3.v7.min.js"></script> Create a container element in your HTML where you want to display the data, such as a element with an ID, like this: <div id="chart"></div> Use D3's d3.
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7 min readCandlestick patterns are a popular tool in technical analysis used by traders to predict future price movements in the financial markets. These patterns derive their name from the shape of the candle they form on price charts.Candlestick patterns consist of two main components: the body and the wick or shadow. The body represents the range between the opening and closing prices, while the wick indicates the high and low prices reached during the given time period.
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7 min readTo drag an SVG rectangle in d3.js, you need to implement the drag behavior using the d3.drag() function. Here is how you can do it:First, select the rectangle element that you want to make draggable using the d3.select() function and store it in a variable. var rect = d3.select("rect"); Next, define the drag behavior function that will be triggered when you start dragging the rectangle. Within this function, you can update the coordinates of the rectangle based on the drag event.
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6 min readCommodity Channel Index (CCI) is a technical analysis tool that is commonly used by traders and investors to identify overbought and oversold market conditions, as well as potential trend reversals. It was developed by Donald Lambert in 1980.The CCI is a momentum-based oscillator that measures the current price level relative to an average price level over a specific period of time, typically 20 periods.
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5 min readIn D3, you can conditionally remove elements by using the filter method along with a callback function that determines whether to keep or remove each element.Here is an example of how you can conditionally remove elements based on a specific condition: // Select the elements you want to filter/remove (e.g., circles with class "data-point") const circles = d3.selectAll("circle.data-point"); // Apply the filtering circles.
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10 min readTo create a bar chart using d3.js, you can follow these steps:Start by including the d3.js library in your HTML document. You can download it from the d3.js website or include it using a CDN (Content Delivery Network). Create an SVG (Scalable Vector Graphics) element in your HTML document where the bar chart will be rendered. You can do this by adding an SVG element to your HTML, specifying the width and height. In your JavaScript code, select the SVG element using d3.
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7 min readWilliams %R, also known as Williams Percent Range, is a popular technical analysis indicator used in trading to identify overbought and oversold conditions in the market. Developed by renowned trader and author Larry Williams, it is primarily used to determine potential reversal points in price movements.Williams %R is a momentum oscillator that oscillates between 0 and -100. It measures the level of the latest closing price relative to the high-low range of a specified period.
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10 min readTo load SVG files with D3, you can follow these steps:First, include the D3 library in your project by adding the following script tag to your HTML or by downloading and including the library file in your project directory. Next, create an SVG container using D3. Select an HTML element where you want to append the SVG and create a container with a specific width and height. For example: const svg = d3.select("body") .append("svg") .attr("width", 500) .