Highcharts save image to server

Highcharts save image to server

First, see the highcharts documentation on exporting files. This will give you the string to the image URL you want. What I'd like to do is to create a link that saves the image on the server, instead of downloading it. How could I do that? I suppose that I have to modify the exportChart function in the exporting. It looks like this but I don't know javascript enough to do that :. I had a fairly simple page reporting some figures with a couple of graphs on the screen.

I figured as TCPDF supports SVG and the graphs are generated in SVG, that would be the best format to capture them in, surprisingly I couldn't find much about doing so, so here's a generic version of my script for phantomjs:.

I'm not sure what your situation is but I intend users to view the report on-screen before clicking to download the PDF, so I'll have that first stage save the graphs and the SVG files will be ready before the PDF is generated. As far as running phantomjs goes if you download it, save this script in there as test. The console. I just implement this using Nobita's method. I was creating a survey that showed the user's results in a chart, uploaded the image to my server and then sent out an email with the image in it.

Here's a few things to note.

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I changed the directory from "temp" to something else and just note that it is in 4 different locations. But, I changed this because I wanted to send back the path to the image, so I deleted the above and replace this with the image path Note that I'm just using the temporary name.

Also, this file is deleting the svg file and also the new file you made. You need to remove the code that deletes the file:. Then, you can use the imageURL however you like. It could be done really easy with PhantomJS. If you save the code as demo. I tried calling chart. So I think you have two options:. Do it server side. Have your javascript return the SVG chart. Stay client side. Then make the request to the highcharts server. This way you could get one PDF document containing multiple charts.

Highcharts JS: Download all charts of current site with one click I can not find an easy way to do this. So I think you have two options: Do it server side. How do JavaScript closures work?In this article we will discuss how we can enable client side exporting in HighChart. But if your product is already in a production environment, none of your clients will agree with the idea of sending their data to any third party server.

Am I right? Here we will discuss that. I hope you will like this. For the past few months, I have been working with a project where I use HighChart to manipulate the data and show it as Charts.

I wanted to get rid of this. Now it is time to check the exporting.

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If you click on export icon on the right top corner, you will be given options to choose like on which format you need to export the data. Just click on anything you wish. To overcome this, you need to add a reference of the file called offline-exporting. Please note that this feature is not supported in browser IE 8, So if you load this chart in any unsupported browser, the module will fall back to the export server. This can be handled with the option fallbackToExportServer: false. You need to set this option in your exporting settings as follows.

Did I miss anything that you may think is needed? I hope you liked this article. Please share with me your valuable suggestions and feedback. Net Forum instead of commenting here. Please see the demo here. View All. Sibeesh Venu Updated date, May 28 Next Recommended Article. Getting Started With. NET 5. Understanding ASP.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again.

If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This is a node. JS charts to static image files. The main use case for the export server is situations where headless conversion of charts are required. Common use cases include automatic report generation, static caching, and for including charts in e.

In addition, the HTTP mode can be used to run your own export server for your users, rather than relying on the public export. The HTTP server can either be ran stand-alone and integrate with your other applications and services, or it can be ran in such a way that the export buttons on your charts route to your own server. For systems that generate automatic reports, using the export server as a node.

See here for examples.

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First, make sure you have node. Go to nodejs. Note: depending on how you installed Node, you may have to create a symlink from nodejs to node. Example on Linux:. The latter is prefered, as it lets you set a separate sizing when exporting and when displaying the chart in your web page.

This is largely an automatic process. When running npm install you will be prompted to accept the license terms of Highcharts. Answering yes will pull the version of your choosing from the Highcharts CDN and put them where they need to be. If you're using the export server as a dependency in your own app, depending on your setup, it may be possible to set the env variable in your package.

When fetching the built Highcharts library, the default behaviour is to fetch them from code.

highcharts save image to server

The export server attaches event listeners to process. This is to make sure that all the phantom processes are properly killed off when the application is terminated. Listeners are also attached to uncaught exceptions - if one appears, the entire pool is killed, and the application terminated.

Be aware though - if you disable this and you don't take great care to manually kill the pool, your server will bleed memory when the app is terminated. If --resources is not set, and a file resources.

It's recommended to run the server using forever unless running in a managed environment such as AWS Elastic Beanstalk. Note that the certificate files needs to be named as such:. The export server utilizes a pool of workerswhere one worker is a PhantomJS process responsible for converting charts.

C# server-side rendering with Highcharts

The pool size can be set with the --workers switch, and should be tweaked to fit the hardware on which you're running the server. It's recommended that you start with the default 8and work your way up or down if 8 is too many for your setup, and things are unstable gradually.

It fires batches of 10 requests every 10ms, and expects the server to be running on port PhantomJS becomes somewhat unstable the more export requests it has historically handled. To work around this, each of the workers has a maximum number of requests it can handle before it restarts itself. This number is 60 by default, and can be tweaked with --workLimit. As with --workersthis number should also be tweaked to fit your use case. It's largely CPU and memory bound, so when using in heavy-traffic situations, it needs a fairly beefy server.

It's recommended that the server has at least 1GB of memory regardless of traffic, and more than one core.Highcharts is an excellent web-based charting package. The export server converts the chart to an image and then sends it back to the browser. The export server is a well-executed solution and should work for most situations.

However for my latest project, the charts contain sensitive data. Sending them to a third-party server is not possible. I considered setting up my own export server, or adding an endpoint to my web application. But both these solutions add complexity to the server for a task that theoretically can be handled in the client.

Highcharts are rendered as SVG scalable vector graphics. The basic steps to download a chart as an image are:. Highcharts has an exporting module that adds functions for downloading and printing charts. This module must be included separately.

This seems like a bug to me. If we can get the dimensions from chart. While this eliminates the need for the exporting module, it also skips the sanitizing code.

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The browser will render the SVG into the image. Once the image has been rendered, you render this image onto the canvas element. The canvas element has a handy function toDataURL that extracts its content as an image. So we can remove document. This is where things get a little hacky. Other browsers will just open the image in the current window instead of presenting it as a download.

See this JSFiddle demo for the complete code.

Server-side Highcharts rendering

This forum message is the only reference I can find discussing the issue in IE.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here.

Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. What I'd like to do is to create a link that saves the image on the server, instead of downloading it.

How could I do that? I suppose that I have to modify the exportChart function in the exporting. It looks like this but I don't know javascript enough to do that :. It could be done really easy with PhantomJS.

If you save the code as demo. I just implement this using Nobita's method. I was creating a survey that showed the user's results in a chart, uploaded the image to my server and then sent out an email with the image in it. Here's a few things to note.

I changed the directory from "temp" to something else and just note that it is in 4 different locations. But, I changed this because I wanted to send back the path to the image, so I deleted the above and replace this with the image path Note that I'm just using the temporary name.

Also, this file is deleting the svg file and also the new file you made.

2.6 Saving Images and Base64 Encoding - Working with Data and APIs in JavaScript

You need to remove the code that deletes the file:. Then, you can use the imageURL however you like. I haven't done that before, but I believe you want to play with the index. By default Highcharts provides for free a web service but you can modify that and create your own web service for exporting, or do whatever you want with the chart.

Look at these instructions which can be found here Export module :. Save highchart as binary image. Learn more. How to save an image of the chart on the server with highcharts? Ask Question. Asked 8 years, 3 months ago. Active 5 years, 1 month ago.

highcharts save image to server

Viewed 47k times. Benjamin Crouzier Benjamin Crouzier I've been using Highcharts for a year now - in my day job. I've been looking into ways of rendering the charts server-side. That's great and it works, but for me - running a headless browser on a server just to render a chart seems a bit excessive. As detailed on their site they've implemented in Javathe server would ideally be a pool of PhantomJS resources which aids concurrency. This method requires sending the Highcharts JSON configuration object to the server - in order to reconstruct the chart.

I'm a fan of keeping things light - why render the charts again on the server - if the client's browser has already done it? Firstly, we're going to need the exporting module which can be found on this page - this provides us with a function to get the SVG representation of the chart. You can do this "manually" via jQuery or plain old JS - but I'm using the exporting module as it does some funky regex to ensure compatibility with various old browsers I'm looking at you IE.

When you have the chart built that you wish to capture, call chart. You could use chart. We'll use the simple bit of script below to post the SVG to our server to be saved and rendered at a later date. How you may use this differ greatly and at what time you wish to actually do the rendering now or later.

Go to nuget and install this package Svg. Then saves it to disk again, could be a Stream. Net for example. You could change things in to the Highcharts options to alter the chart. Another benefit is that you can change the data and then send it to PhantomJS to render a new chart - without ever having to show the client.

Obviously editing the chart using SVG would be reckless and you'd have to be very confident in your abilities. However, for situations where you may be generating a report for a client who has just seen the screen and you don't need to change the chart in anyway - why would you want to render the chart server side?

Oh and another thing, when tested locally times each way PhantomJS averaged at ms per chartwhereas the SVG took around 60ms per chart. This is expected due to the extra work PhantomJS has to do - as it is actually rendering the chart. Shout me on twitter if you're doing it another way not mentioned above - I'd love to see more ways of tackling this problem :.

So, lets get to it Now on to the server Go to nuget and install this package Svg The following code, receives the SVG as a string could even be a Streampasses it to SVG, to render it, returns it as a bitmap.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here.

Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. What I'd like to do is to create a link that saves the image on the server, instead of downloading it.

highcharts save image to server

How could I do that? I suppose that I have to modify the exportChart function in the exporting. It looks like this but I don't know javascript enough to do that :. It could be done really easy with PhantomJS. If you save the code as demo.

I just implement this using Nobita's method. I was creating a survey that showed the user's results in a chart, uploaded the image to my server and then sent out an email with the image in it. Here's a few things to note. I changed the directory from "temp" to something else and just note that it is in 4 different locations.

Client Side Exporting In HighChart

But, I changed this because I wanted to send back the path to the image, so I deleted the above and replace this with the image path Note that I'm just using the temporary name. Also, this file is deleting the svg file and also the new file you made. You need to remove the code that deletes the file:. Then, you can use the imageURL however you like. I haven't done that before, but I believe you want to play with the index.

By default Highcharts provides for free a web service but you can modify that and create your own web service for exporting, or do whatever you want with the chart.

Look at these instructions which can be found here Export module :. Save highchart as binary image. Learn more. How to save an image of the chart on the server with highcharts? Ask Question. Asked 8 years, 3 months ago.

Active 5 years, 1 month ago. Viewed 47k times. Benjamin Crouzier Benjamin Crouzier Active Oldest Votes. This is great. Thank you. I'm using database, how can I integrate my data in demo. How to pass the data to javascript file wich in turn return a json items? I'm newbie to this.

Anna Anna 8 8 silver badges 19 19 bronze badges. Really helped me. And for who didnt get the outputplease follow nobita's comment. If you didnt install batik you wont get any output. Look at these instructions which can be found here Export module : "If you want to set up this web service on your own server, the index.


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