I need to render a chart as a .html file on the node.js side.
Are there any libraries which can do that?
I was doing some research, and every one of them is saving it as a .png file.
What I want to achieve is that I want to allow users to hover on chart etc. that's why I cannot use .png file
You can use highcharts-export-server to generate a chart in SVG format, but the case with interaction is complicated - please check this thread: https://github.com/highcharts/highcharts/issues/7058
However, I think the amount of data that you want to show on a chart is not so huge. Highcharts provide boost module and dataGrouping in Highstock, which will effectively improve performance:
Highcharts.chart('container', {
boost: {
seriesThreshold: 1
},
series: [...]
});
Live demo: http://jsfiddle.net/BlackLabel/mhgraqbs/
Related
I used to use wkhmtltopdf to print some webpages but unfortunately it doesn't work anymore with some modern websites.
I found weasyprint which I tried in command line. The output has all the contents but text is cropped probably due to page size.
The website tells this is customizable in CSS (https://weasyprint.readthedocs.io/en/stable/tutorial.html#adjusting-document-dimensions). I'm not a web expert and don't really know what to do here. Should I copy and edit the source code of the webpage ? Where should it be inserted then ?
Here is sample webpage I'd like to print properly as a pdf:
https://korben.info/8-clients-alternatifs-pour-spotify.html
Has anyone succeeded in proper printing with weasyprint ?
Thank you for your help.
Adjusting Document Dimensions
Currently, WeasyPrint does not provide support for adjusting page size or document margins via command-line flags. This is best accomplished with the CSS #page at-rule. Consider the following example:
#page {
size: Letter; /* Change from the default size of A4 */
margin: 2.5cm; /* Set margin on each page */
}
#page is a CSS media query, so you have to write down the code in a .css file.
Once done you can call
weasyprint -s path/to/css/file input output
Notice that complex pages are usually bad rendered by weasyprint, as there are few not-supported style tags (calc, var, overflow on precise axis, ecc..).
Let me say that working like taht is a mess, if you need to do complex things consider to use weasyprint as a Python lib and not in standalone mode, so you can process sources and achieve better results in whatever you need to do.
Hope it helps.
Hele.
I have two html tables(containing dynamic content stored in variables) along with headings and paragraphs. When the user clicks the download PDF button, he/she should be able to download one PDF of two pages containing the two tables.
I have read a lot of articles but I found no definite answer to this issue.Should I use jspdf or react-pdf for this scenario?
I am using react frontend and Nodejs backend.
https://github.com/MrRio/jsPDF
JSPDF is a perfect solution for converting tables into PDF in client-side. But if you want to do something from backend
Or you can refer to
https://www.npmjs.com/package/html-pdf
for rendering it in the backend, and make express download it.
Looks like you can call the window.print() method in componentDidMount() to print the complete div, though removing the footer through the script can be a challenge.
Using html2canvas with jspdf has a major drawback that the pdfs are blurred and their clarity varies with the page zoom, as it takes the screenshot of that portion. Hence, you must configure it correctly or compromise on quality.
I have been working with Vaadin charts during this week and I found a problem that I cannot solve. I need to send several charts to a PDF generation (using iTextpdf) and I could do it using SVGGenerator. The main problem is I cannot use this solution because the final laptop doesn't allow any installation, and Phantomjs is required for SVG Generator (no add-on can be installed neither). I tried to find a different solution to convert the chart content into file or buffer that I can manage, but I think I have been reading so much posts and I am not able to distinguish the solution.
So, I will try to clarify basic questions first:
a) Is it possible to manage SVG Generator without any installation in the laptop?
b) If not, is there a different way to convert a chart into an object which class could be managed to insert it into a PDF?
I can assure you I tried to read all documentation in this forum and official Vaadin forum related to this topic but I couldn't find any solution. I don't want to seem lazy, I only want to avoid spending more time and clarify the maining pre-conditions to solve this issue.
thanks in advance for your time and help.
Kind regards,
David.
You can take a screenshot of your chart and append it to pdf:
Screenshot screenshot = new Screenshot();
screenshot.setTargetComponent(myTargetComponent);
myChartLayout.addComponent(screenshot);
//when complete
screenshot.addScreenshotListener(new ScreenshotListener() {
public void screenshotComplete(ScreenshotImage image) {
//do something
}
});
//take screenshot
screenshot.takeScreenshot();
You will not be able to render a Vaadin Chart without a web browser engine of some kind. That's what PhantomJS provides. If you have a full-blown web browser at your disposal, though, you can grab the SVG markup manually from there; it's just a bit more difficult to automate. This works in Chrome:
Open your Charts app in the browser
Open the JavaScript console (Ctrl/Cmd + Shift + J)
Type something like this: copy(document.getElementsByTagName('svg')[0].outerHTML)
Paste the contents of your clipboard to a new text file and save it as an SVG.
You don't need to install phantomjs, just bundle its binary along with your web application (Reference). I did the same thing with my Amazon AWS deployment and it works just fine.
I am trying to create an interactive map where users can click on different provinces in the map to get info specific to that province.
Example:
archived: http://www.todospelaeducacao.org.br/
archived: http://code.google.com/p/svg2imap/
So far I've only found solutions that have limited functionality. I've only really searched for this using an SVG file, but I would be open to other file types if it is possible.
If anyone knows of a fully functioning way to do this (jQuery plug-in, PHP script, vector images) or a tutorial on how to do it manually please do share.
jQuery plugin for decorating image maps (highlights, select areas, tooltips):
http://www.outsharked.com/imagemapster/
Disclosure: I wrote it.
Sounds like you want a simple imagemap, I'd recommend to not make it more complex than it needs to be. Here's an article on how to improve imagemaps with svg. It's very easy to do clickable regions in svg itself, just add some <a> elements around the shapes you want to have clickable.
A couple of options if you need something more advanced:
http://jqvmap.com/
http://jvectormap.com/
http://polymaps.org/
I think it's better to divide my answer to 2 parts:
A-Create everything from scratch (using SVG, JavaScript, and HTML5):
Create a new HTML5 page
Create a new SVG file, each clickable area (province) should be a separate SVG Polygon in your SVG file,
(I'm using Adobe Illustrator for creating SVG files but you can find many alternative software products too, for example Inkscape)
Add mouseover and click events to your polygons one by one
<polygon points="200,10 250,190 160,210" style="fill:lime;stroke:purple;stroke-width:1"
onmouseover="mouseOverHandler(evt)"
onclick="clickHandler(evt)" />
Add a handler for each event in your JavaScript code and add your desired code to the handler
function mouseOverHandler(evt) {};
function clickHandler(evt) {};
Add the SVG file to your HTML page (I prefer inline SVG but you can use linked SVG file too)
Upload the files to your server
B-Use a software like FLDraw Interactive Image Creator (only if you have a map image and want to make it interactive):
Create an empty project and choose your map image as your base image when creating the new project
Add a Polygon element (from the Shape menu) for each province
For each polygon double click it to open the Properties window where you can choose an event type for mouse-over and click,
also change the shape opacity to 0 to make it invisible
Save your project and Publish it to HTML5, FLDraw will create a new folder that contains all of the required files for your project that you can upload to your server.
Option (A) is very good if you are programmer or you have someone to create the required code and SVG file for you,
Option (B) is good if you don't want to hire someone or spend your own time for creating everything from scratch
You have some other options too, for example using HTML5 Canvas instead of SVG, but it's not very easy to create a Zoomable map using HTML5 Canvas,
maybe there are some other ways too that I'm not aware of.
Just in case anyone will search for it - I used it on several sites, always the customization and RD possibilities were a perfect fit for what I needed. Simple and it is free to use:
Clickable CSS Maps
One note for more scripts on a site: I had some annoying problems with getting to work a map (that worked as a graphic menu) in Drupal 7. There where many other script used, and after handling them, I got stuck with the map - it still didn't work, although the jquery.cssmap.js, CSS (both local) and the script in the where in the right place. Firebug showed me an error and I suddenly eureka - a simple oversight, I left the script code as it was in the example and there was a conflict. Just change the front function "$" to "jQuery" (or other handler) and it works perfect. :]
Here's what I ment (of course you can put it before instead of the ):
<script type="text/javascript">
jQuery(function($){
$('#map-country').cssMap({'size' : 810});
});
</script>
Go to SVG to Script
with your SVG the default output is the map in SVG
Code which adds events is also added but is easily identified and can be altered as required.
I have been using makeaclickablemap for my province maps for some time now and it turned out to be a really good fit.
I had the same requirements and finally this Map converter worked for me. It is the best plugin for any map generation.
Here is another image map plugin I wrote to enhance image maps: https://github.com/gestixi/pictarea
It makes it easy to highlight all the area and let you specify different styles depending on the state of the zone: normal, hover, active, disable.
You can also specify how many zones can be selected at the same time.
The following code may help you:
$("#svgEuropa [id='stallwanger.it.dev_shape_DEU']").on("click",function(){
alert($(this).attr("id"));
});
Source
You have quite a few options for this:
1 - If you can find an SVG file for the map you want, you can use something like RaphaelJS or SnapSVG to add click listeners for your states/regions, this solution is the most customizable...
2 - You can use dedicated tools such as clickablemapbuilder (free) or makeaclickablemap (i think free also).
[disclaimer] Im the author of clickablemapbuilder.com :)
<script type="text/javascript">
jQuery(function($){
$('#map-country').cssMap({'size' : 810});
});
</script>
strong text
I am creating an ASP.NET web application. In one of my webpages (an ASCX control) I am placing a fusion chart inside a <div> tag. I want to provide an option for the client to download this fusion chart.
Is there any way that I can download
the fusion chart present in the Div
tag, as an image (Using javascript
because the div tag is a client side
control).
The request is that my client could save this fusion chart present in the <div> tag as an image when he visits the webpage.
The target browser is IE.
Please help me.
I can confirm that it is not possible to 'Export the chart as image' when using FusionCharts Free. However, as mentioned by Larsenal, you will be able to use FusionCharts v3.2.1 and it's updated JavaScript API to export pure JavaScript charts to JPEG, PNG, PDF, SVG formats.
Ref.- http://www.fusioncharts.com/docs/?ECPureJS.html
Furthermore, you may even export your Flash charts, if required, in a similar manner. DO check out the link below for a more detailed account of the same.
Ref.- http://www.fusioncharts.com/docs/?ECOverview.html
Hope this helps.
It is currently not possible to generate an image from a section of a webpage with JavaScript. Quoting myself from another question:
Firefox added something similar to
this to their canvas implementation.
You can find
CanvasRenderingContext2D.drawWindow()
documented in their wiki. It is
restricted to being used by plugins,
for security purposes, and isn't
supported by any other browsers.
There is
talk
of adding support to other browsers,
and perhaps removing some of the
security restrictions, but that is
probably a long way off. For now,
there isn't a good JavaScript solution
to your problem.
Sorry, there's no way to do it with Javascript.
I don't know about the Fusion controls, but some graphing libraries include a way to render to an image or PDF. Start looking there, not Javascript.
Update: FusionCharts claims to have the ability to export to JPG, PNG, PDF and CSV. Start with this page about exporting pure JS charts in their documentation.