Comments on: How to make heat maps in Flex http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/ Data Visualization Architect Thu, 26 Apr 2012 15:57:35 +0000 hourly 1 By: veco http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-23163 veco Thu, 26 Apr 2012 15:57:35 +0000 http://michaelvandaniker.com/blog/?p=4#comment-23163 Thanks Mike! I'll try this out. Thanks Mike! I’ll try this out.

]]> By: Michael http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-23154 Michael Thu, 26 Apr 2012 11:35:19 +0000 http://michaelvandaniker.com/blog/?p=4#comment-23154 veco, you mean something like a legend? the GradientDictionary constants are arrays of hex color codes. You could create a linear gradient fill and loop over the array, populating the gradient stops each way. The draw a rect in the background of your container using that gradient fill. veco, you mean something like a legend? the GradientDictionary constants are arrays of hex color codes. You could create a linear gradient fill and loop over the array, populating the gradient stops each way. The draw a rect in the background of your container using that gradient fill.

]]> By: veco http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-23125 veco Thu, 26 Apr 2012 00:24:53 +0000 http://michaelvandaniker.com/blog/?p=4#comment-23125 How can we use the different GradientDictionary color schemes (THERMAL,RAINBOW,RWB) to create a gradient background color on a container that will represent the "least intense" to the "most intense" color? Like for example there are a total of 999 clicks on an image, I would like to plot a gradient background on a canvas/container which has the colors for the intensities on the image being heatmapped. How can we use the different GradientDictionary color schemes (THERMAL,RAINBOW,RWB) to create a gradient background color on a container that will represent the “least intense” to the “most intense” color?

Like for example there are a total of 999 clicks on an image, I would like to plot a gradient background on a canvas/container which has the colors for the intensities on the image being heatmapped.

]]> By: Harriet http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-21816 Harriet Fri, 06 Apr 2012 11:17:51 +0000 http://michaelvandaniker.com/blog/?p=4#comment-21816 Thanks for this subject, I will use it in my flashreport project Thanks for this subject, I will use it in my flashreport project

]]> By: Ryan G0dlonton-Shaw http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-13114 Ryan G0dlonton-Shaw Wed, 27 Apr 2011 10:36:19 +0000 http://michaelvandaniker.com/blog/?p=4#comment-13114 Amazing concept. Amazing concept.

]]> By: Omar http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-10914 Omar Sun, 30 Jan 2011 21:38:20 +0000 http://michaelvandaniker.com/blog/?p=4#comment-10914 Hello Michael, Thanks for your suggestion, I'll take a try and let you know my results... Good Bye! Hello Michael, Thanks for your suggestion, I’ll take a try and let you know my results… Good Bye!

]]> By: Michael http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-10887 Michael Sat, 29 Jan 2011 15:01:45 +0000 http://michaelvandaniker.com/blog/?p=4#comment-10887 Omar, the HeatMap wasn't really built to do that, but that is definitely a good feature. You would need a way to let the class know what radius to use for each point, so you could add a radiusFunction and call it in the same way as the transformation/weight functions. drawHeatMap would need to be altered so creating the heatMapItem happened inside the loop since that is the object responsible for drawing each point. I hope this helps. Omar, the HeatMap wasn’t really built to do that, but that is definitely a good feature. You would need a way to let the class know what radius to use for each point, so you could add a radiusFunction and call it in the same way as the transformation/weight functions. drawHeatMap would need to be altered so creating the heatMapItem happened inside the loop since that is the object responsible for drawing each point. I hope this helps.

]]> By: Omar http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-10850 Omar Thu, 27 Jan 2011 18:35:26 +0000 http://michaelvandaniker.com/blog/?p=4#comment-10850 Hello Michael, gr8 job... i've been using this component. I'd like you to tell me how can I modify the itemRadius property to change the size of a point dynamically, I've modified the point:Point for an Object (with the point inside) and the current radius but all objects become the same size... Hope you can give me a hand. Thank you very much... Hello Michael, gr8 job… i’ve been using this component. I’d like you to tell me how can I modify the itemRadius property to change the size of a point dynamically, I’ve modified the point:Point for an Object (with the point inside) and the current radius but all objects become the same size… Hope you can give me a hand. Thank you very much…

]]> By: Jon http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-4578 Jon Sun, 20 Dec 2009 15:56:51 +0000 http://michaelvandaniker.com/blog/?p=4#comment-4578 Thanks Michael for this great work! I've created a simple tool to draw the gradient by hand, and use your process to create the gradient array... http://isokon.net/post/gradientArray/accessColorInGradient.fla Thanks Michael for this great work! I’ve created a simple tool to draw the gradient by hand, and use your process to create the gradient array…

http://isokon.net/post/gradientArray/accessColorInGradient.fla

]]> By: Shawn http://michaelvandaniker.com/blog/2008/07/06/how-to-make-heat-maps-in-flex/comment-page-1/#comment-3593 Shawn Tue, 03 Nov 2009 16:25:04 +0000 http://michaelvandaniker.com/blog/?p=4#comment-3593 It would be interesting to extract that technique into a class that could generate random gradients, or better yet, take the algorithm and allow the user to define their own. Again, thanks Michael! It would be interesting to extract that technique into a class that could generate random gradients, or better yet, take the algorithm and allow the user to define their own.

Again, thanks Michael!

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