chartjs zoom

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm trying to use the chart.

How to create a zoomable view (image zoom/pan) in React Native

Qlik is not really relevent here I guess but I will mention it anyways. I had a similar issue with the datalabels plugin, but it was solved by the mapping in the above code snippet.

This is coming from line 11 here. Any help on how should I require this plugin to overcome this error? I have tried to search for a solution with no luck so far. Thanks in advance.

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We also had a similar issue. We had tried endlessly to attempt the owners solutions however to no avail. The issue occurs since RequireJS expects libraries to omit. Regarding the error on line 11, we also replicated that issue and our conclusion was that chart was not loaded correctly.

Learn more. Issue loading chart. Asked 2 years, 2 months ago. Active 1 year, 3 months ago. Viewed times. So here is how I try to load the plugin via require.

The error I always keep getting is Uncaught TypeError: Cannot read property 'helpers' of undefined This is coming from line 11 here.

chartjs zoom

FranzHuber23 1, 1 1 gold badge 9 9 silver badges 34 34 bronze badges. I'm seeing the same error. I'm not yet sure where it comes from Active Oldest Votes.

Koshux Koshux 1 1 gold badge 2 2 silver badges 10 10 bronze badges.This plugin draws an linear trendline in your Chart. Made for Chart. Highly customizable Chart. A chartjs plugin for zooming, panning and select data in a chartjs instance. This framework is a Django application that originally was used to display the performance of employees based on the amount of tickets that they solved per day.

Nowadays, this framework was modified to be an open framework to visualize any type of performance. Add a description, image, and links to the chartjs-plugin topic page so that developers can more easily learn about it.

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Curate this topic. To associate your repository with the chartjs-plugin topic, visit your repo's landing page and select "manage topics. Learn more. Skip to content. Here are 25 public repositories matching this topic Language: All Filter by language. Sort options. Star Code Issues Pull requests. Updated Jun 19, JavaScript. Updated May 22, JavaScript. Updated Nov 14, JavaScript. Updated Jun 17, Vue. Updated Jun 7, JavaScript.

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The current basic options settings are. Learn more. Asked 2 years, 11 months ago. Active 1 year, 6 months ago. Viewed 9k times. Darren Sweeney Active Oldest Votes. You need to do this. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

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You can call chart. See this example on jsfiddle. And it looks like:. However, I don't want to show the Reset zoom button in the first place. Instead, I would like to hide it first, and then listen for a zoom event In chartjs-plugin-zoom the event is mouse wheel and pinch for touch screens to show it.

So the question is, is there a way in chartjs with chartjs-plugin-zoom to add a zoom event handler wheel and pinch events to a chart? Unfortunately, you can not add mouse scroll event to the chart, as the chartjs-plugin-zoom will prevent that by default.

So each time you zoom in the reset zoom button is displayed and once you reset the zoom it is hidden again. Learn more. Add zoom event handler to charts for chartjs with chartjs-plugin-zoom Ask Question.

Asked 3 years, 1 month ago. Active 3 months ago. Viewed 14k times. Yuci Yuci Active Oldest Votes. However, you can use the following chart plugin, which will get the job done for you Another approach to this is to use the zoom plugin onZoomComplete event.

First, you should apply a style to the zoom button that will have it hidden by default. Nikos Steiakakis Nikos Steiakakis 5, 6 6 gold badges 42 42 silver badges 51 51 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook.

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Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.For each chart, there are a set of global prototype methods on the shared chart type which you may find useful.

These are available on all charts created with Chart. Use this to destroy any chart instances that are created. This will clean up any references stored to the chart object within Chart. This must be called before the canvas is reused for a new chart. Triggers an update of the chart. This can be safely called after updating the data object. This will update all scales, legends, and then re-render the chart.

Note: replacing the data reference e. Prior that, replacing the entire data object could be achieved with the following workaround: myLineChart. A config object can be provided with additional configuration for the update process.

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This is useful when update is manually called inside an event handler and some different animation is desired. Reset the chart to it's state before the initial animation. A new animation can then be triggered using update. Triggers a redraw of all chart elements. Note, this does not update elements for new data. Use this to stop any current animation loop. This will pause the chart during any current animation frame. Use this to manually resize the canvas element.

This is run each time the canvas container is resized, but you can call this method manually if you change the size of the canvas nodes container element. Will clear the chart canvas. Used extensively internally between animation frames, but you might find it useful. Returns an HTML string of a legend for that chart. The legend is generated from the legendCallback in the options. Calling getElementAtEvent event on your Chart instance passing an argument of an event, or jQuery event, will return the single element at the event position.

If there are multiple items within range, only the first is returned. The value returned from this method is an array with a single parameter.GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Already on GitHub? Sign in to your account. Hey, I am using chart JS for drawing chart in my website. I was wondering if there is any option to zoom the chart? Like in the line graph for bar charts, is there option like that? It's very urgency for me. Thanks in advance. It's really more about just scaling the values of your chart in fractions. JamesWilsonNovel I'm using ChartJS and would that the user rotate the mouse wheel on the chart, it is capable of zooming. I tried to do something like JamesWilsonNovel but then I tried google charts.

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Google also forces you to call their API, so code is not self-contained. I love Chart.

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From the perspective of the chart, zooming is essentially 2 things:. In terms of triggering zoom, I don't know how much we'd put into the core. I think we would create an extension that would add that functionality. The extension could have dependencies like HammerJS for gesture support and other advanced things that we don't necessarily want in the core. While I know you, and others, are always expanding it and improving it, when trying to decide on which library to use it would be handy to have a changelog with some dates to see a timeline of features that have been added so they can project into the future that maybe within a short period what they want would be supported.

That could entice extra users, which could mean extra contributors as well. As it stands now, I would have to dig through a graphical chart on github hovering over a bunch of different things trying to decipher what has been added in a timeframe. Not the worst, but maybe not as helpful as a changelog with a "coming soon" in v2 section. I really like Chart. As I'm new to this project maybe you guys could provide some feedback on my way of integrating the timeline into the infrastructure.

Enjoy data

As you mentioned you don't want the core lib to be too cluttered with stuff that's not used very often, so I thought about creating the timeline as a plugin. Unfortunately I needed some places of the core to change handleEvent method for example. So guys?

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Now I see version 2. Is this supported now? I would really appreciate an example of panning and zooming a plot. Panning means dragging changing the x scale values? I am not able to get it running. Zoom works, but it zoom only the numbers instead of a string labels. Does someone know what could be the issue? Can this be closed? A suitable solution has been presented with the Chart.

chartjs zoom

Have you tried the demo? It keeps sending the wrong event which leads to just being able to zoom in, not out.Have a question about this project?

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Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. Skip to content. Labels 10 Milestones 0. Labels 10 Milestones 0 New issue.

Zoom drag and pan together opened Jun 28, by OrenMe. Many issues with zoom opened Jun 26, by dexion. Activating zoom after first click opened Jun 25, by flaushi. Multiple Y axis support opened Jun 19, by meckyp. How install locally opened Jun 6, by Grandpa-G. Prevent scale change on pan opened Jun 3, by abhishekac. Zoom in x-axis doesn't work opened May 25, by yoelz Doesn't work at all opened May 15, by dospina Zoom speed on large data opened May 13, by diamond Zoom drag doesn't work with x-axis opened May 12, by AliBasicCoder.

Checking if zoom is active opened Apr 22, by tarockx. Allow normal touch scroll when pan. Allow zooming only with a pressed modifier key opened Mar 15, by NicolasGoeddel. Not zooming on other zone that chartArea should be an option opened Mar 5, by Nortalle.

Pan with middle mouse button instead of click opened Feb 17, by nathan-fiscaletti. Previous 1 2 3 4 Next. Previous Next.

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