Best Chart.js Tools to Buy in October 2025
Dunzoom 3 Pcs Marine Navigation Kit, Basic Navigation Set Include 18" Marine Parallel Ruler with Clear Scales, 8" Diameter Nautical Plotter Protractor, 6" Fixed Point Divider for Boat Accessories
-
COMPLETE KIT FOR ALL YOUR NAVIGATION NEEDS INCLUDES RULER, DIVIDER, AND PROTRACTOR FOR SEAMLESS MARINE SAILING.
-
DURABLE MATERIALS ENSURE ACCURATE READINGS CRAFTED FROM CLEAR PVC, ACRYLIC, AND METAL FOR RELIABLE NAVIGATION.
-
EASY-TO-USE TOOLS FOR EFFORTLESS SAILING CONVENIENT DESIGNS ENHANCE NAVIGATION SKILLS ANYTIME, ANYWHERE.
Saysurey Parallel Ruler Marine Navigation Tool with Clear Scales Parallel Ruler with Brushed Aluminum Arms Nautical Charts Navigation Tools for Boat Ship Drawing(12 Inch)
- PLOT ACCURATE BEARINGS EASILY WITH OUR VERSATILE 12-INCH PARALLEL RULER.
- BUILT FROM DURABLE ACRYLIC AND ALUMINUM FOR LONG-LASTING RELIABILITY.
- ENJOY CLEAR SCALES AND HIGH TRANSPARENCY FOR PRECISE MAPPING EVERY TIME.
Motipuns 3 Pcs Basic Navigation Set, Include 16 Inch Marine Parallel Ruler with Clear Scales Navigation Divider Marine Nautical Protractor 6 Inch Marine Fixed Points Divider for Boat
- ALL-IN-ONE NAVIGATION KIT FOR SEAMLESS SEA CHART TASKS.
- DURABLE, CLEAR ACRYLIC TOOLS FOR PRECISE MEASUREMENTS EVERY TIME.
- EASY-TO-USE PROTRACTOR AND DIVIDERS ENHANCE YOUR NAVIGATION SKILLS.
Weems & Plath #176 Marine Navigation Ultralight Divider
- DURABLE MARINE ALLOY RESISTS CORROSION FOR LONG-LASTING USE.
- EASY-TO-USE CENTER GEAR MECHANISM ENHANCES USER EXPERIENCE.
- BACKED BY A LIFETIME WARRANTY FOR PEACE OF MIND.
Weems & Plath Marine Navigation Parallel Ruler (Aluminum Arms, 15-Inch)
Weems & Plath Marine Navigation Primary Navigation Set
- ULTRALIGHT DIVIDER FOR PRECISE MEASUREMENTS ON THE GO.
- 12-INCH PARALLEL RULER FOR ACCURATE DRAFTING AND NAVIGATION.
- CONVENIENT STORAGE POUCH KEEPS TOOLS ORGANIZED AND PORTABLE.
Ironwarrior 3 Pcs Basic Navigation Set,Including 15inch Parallel Ruler with Brass Arms, Nautical Protractor, and 6 Inch Marine Fixed Points Divider, Marine Accessories with Clear Scales for Boat
- ALL-IN-ONE NAVIGATION KIT: ESSENTIAL TOOLS FOR PRECISE CHART PLOTTING.
- DURABLE & ROBUST DESIGN: BUILT TO ENDURE HARSH MARINE ENVIRONMENTS.
- PORTABLE & LIGHTWEIGHT: EASY TO CARRY FOR ANY MARITIME ADVENTURE.
WEEMS & PLATH Essentials Navigation Kit
- ULTRALIGHT DESIGN FOR EASY PORTABILITY ON ANY SAILING ADVENTURE.
- PRECISION TOOLS ENHANCE NAVIGATION ACCURACY FOR SAFER JOURNEYS.
- USER-FRIENDLY INSTRUCTIONS MAKE MASTERING NAVIGATION A BREEZE.
3 Pcs Basic Navigation Set, Including Marine Parallel Ruler, Nautical Protractor, and Navigation Fixed Point Divider, Marine Accessories with Clear Scales for Boat
- COMPLETE NAVIGATION KIT: ESSENTIAL TOOLS FOR PRECISE MARINE NAVIGATION.
- HIGH-TRANSPARENCY RULER & PROTRACTOR: CLEAR, ACCURATE MEASUREMENTS ENSURED.
- DURABLE, USER-FRIENDLY DESIGN: PERFECT FOR ONBOARD TASKS AND PRACTICE.
Weems & Plath Marine Navigation Parallel Plotter
- PRECISION ENGINEERING ENSURES ACCURATE READINGS EVERY TIME.
- DURABLE DESIGN WITHSTANDS TOUGH MARINE CONDITIONS EFFORTLESSLY.
- USER-FRIENDLY INTERFACE FOR QUICK AND EASY NAVIGATION.
To size or scale a chart in chart.js, you can adjust the size of the canvas element that the chart is rendered on by setting its width and height properties either using inline style attributes or through CSS. You can also adjust the size of the chart itself by specifying options such as maintainAspectRatio and responsive in the chart configuration. By experimenting with these options and settings, you can customize the size and scaling of your chart to fit your design needs.
What are the available options for resizing a chart in chart.js?
- Using the responsive option: Set the responsive option to true in the chart configuration to make the chart resize automatically to fit its container.
- Using the maintainAspectRatio option: Set the maintainAspectRatio option to false in the chart configuration to allow the chart to dynamically adjust its aspect ratio as it resizes.
- Using CSS: You can also manually resize the chart by setting the width and height of the chart container using CSS.
- Using the height and width options: You can also directly set the height and width of the chart in the chart configuration.
- Using the Chart.js plugin: There are plugins available for Chart.js that allow for more advanced chart resizing options. One popular plugin is chartjs-plugin-zoom, which allows for zooming and panning functionality in charts and can also help with resizing.
What methods can be used to change the dimensions of a chart in chart.js?
- Using the width and height options when creating the chart:
var myChart = new Chart(ctx, { type: 'bar', data: data, options: { responsive: false, maintainAspectRatio: false, width: 400, height: 200 } });
- Changing the dimensions of the canvas element directly:
var canvas = document.getElementById('myChart'); canvas.width = 400; canvas.height = 200;
- Using CSS to change the dimensions of the container element:
#myChartContainer { width: 400px; height: 200px; }
- Changing the dimensions of the chart using the resize() method:
myChart.resize(400, 200);
How to set the width and height of a chart in chart.js?
To set the width and height of a chart in Chart.js, you can use the options object when creating the chart. Here's an example code snippet:
var ctx = document.getElementById('myChart').getContext('2d'); var myChart = new Chart(ctx, { type: 'bar', data: { labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'], datasets: [{ label: '# of Votes', data: [12, 19, 3, 5, 2, 3], backgroundColor: [ 'red', 'blue', 'yellow', 'green', 'purple', 'orange' ] }] }, options: { responsive: true, maintainAspectRatio: false, aspectRatio: 2, // this will set the aspect ratio of the chart width: 800, // set width of the chart height: 400 // set height of the chart } });
In the options object, you can set the width and height properties to specify the desired width and height of the chart respectively. You can also set the aspectRatio property to maintain a specific aspect ratio for the chart. Additionally, setting responsive: true will make the chart responsive to changes in the size of its container, while maintainAspectRatio: false will allow you to set a custom aspect ratio.
How to optimize chart size for performance in chart.js?
To optimize chart size for performance in Chart.js, you can follow these tips:
- Reduce the number of data points: Limit the amount of data being rendered on the chart to only what is necessary for visual clarity. This will help improve performance by reducing the amount of calculations required to render the chart.
- Use responsive charts: Use the responsive feature in Chart.js to automatically adjust the size of the chart based on the size of the container it is in. This can help improve performance on different screen sizes and devices.
- Use the maintainAspectRatio option: Set the maintainAspectRatio option to false to allow the chart to stretch to fill the container it is in. This can help improve performance by ensuring that the chart is not rendered at a larger size than necessary.
- Use lazy loading: Only load the chart when it is visible on the screen or when the user interacts with it. This can help improve performance by reducing the amount of rendering required when the chart is not in view.
- Use caching: Cache the rendered chart to avoid unnecessary re-rendering when the data or settings have not changed. This can help improve performance by reducing the amount of calculations required to render the chart.
By implementing these tips, you can optimize the chart size for performance in Chart.js and ensure a smooth and responsive user experience.
How to set a fixed size for a chart in chart.js?
To set a fixed size for a chart in Chart.js, you can use the options parameter when creating the chart and specify the maintainAspectRatio and responsive properties as false. This will prevent the chart from automatically resizing based on the container size.
Here is an example of how you can set a fixed size for a chart in Chart.js:
var ctx = document.getElementById('myChart').getContext('2d'); var myChart = new Chart(ctx, { type: 'bar', data: { labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'], datasets: [{ label: '# of Votes', data: [12, 19, 3, 5, 2, 3], backgroundColor: 'rgba(255, 99, 132, 0.2)', borderColor: 'rgba(255, 99, 132, 1)', borderWidth: 1 }] }, options: { maintainAspectRatio: false, responsive: false, scales: { y: { beginAtZero: true } } } });
In this example, the maintainAspectRatio and responsive properties are set to false in the options object. This will ensure that the chart maintains a fixed size and does not resize based on the container size.
You can adjust the size of the chart by setting the width and height properties of the canvas element in the HTML code or by using CSS styling.