scaling

问题 The declaration of android.graphics.Bitmap.createScaledBitmap is public static Bitmap createScaledBitmap (Bitmap src, int dstWidth, int dstHeight, boolean filter) However, the documentation doesn\'t explain any of the parameters. All of them are pretty obvious except for boolean filter . Does anyone know what it does? 回答1: A quick dig through the SKIA source-code indicates that (at least by default) the FILTER flag causes it to do a straightforward bilinear interpolation. Check Wikipedia or

问题 Currently, I\'m using 2D canvas context to draw an image generated (from pixel to pixel, but refreshed as a whole buffer in once after a generated frame) from JavaScript at about a 25fps rate. The generated image is always one byte (integer / typed array) per pixel and a fixed palette is used to generate RGB final result. Scaling is also needed to adopt to the size of the canvas (ie: going to fullscreen) and/or at user request (zoom in/out buttons). The 2D context of canvas is OK for this

问题 See http://jsfiddle.net/aJ333/1/ in Chrome and then in either Firefox or Internet Explorer. The image is originally 120px, and I\'m scaling down to 28px, but it looks bad pretty much no matter what you scale it down to. The image is a PNG and it has an alpha channel (transparency). Here\'s the relevant code: HTML: <a href=\"http://tinypic.com?ref=2z5jbtg\" target=\"_blank\"> <img src=\"http://i44.tinypic.com/2z5jbtg.png\" border=\"0\" alt=\"Image and video hosting by TinyPic\"> </a>​ CSS: a {

问题 At the startup I\'m working at we are now considering scaling solutions for our database. Things get somewhat confusing (for me at least) with MySQL, which has the MySQL cluster, replication and MySQL cluster replication (from ver. 5.1.6), which is an asynchronous version of the MySQL cluster. The MySQL manual explains some of the differences in its cluster FAQ, but it is hard to ascertain from it when to use one or the other. I would appreciate any advice from people who are familiar with

问题 I have tried the following to fit the webpage based on the device screen size. mWebview.setInitialScale(30); and then set the metadata viewport <meta name=\"viewport\" content=\"width=320, initial-scale=1.0, maximum-scale=1.0, user-scalable=no\" /> <meta name=\"viewport\" content=\"width=device-width; initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/> <meta name=\"viewport\" content=\"width=device-width, target-densityDpi=medium-dpi\"/> But nothing works, webpage is

问题 I want to have an inline svg element\'s contents scale when size is non-native. Of course I could have it as a separate file and scale it like that. index.html: <img src=\"foo.svg\" style=\"width: 100%;\" /> foo.svg: <svg width=\"123\" height=\"456\"></svg> However, I want to add additional styles to the SVG thru CSS, so linking an external one is not an option. How do I make an inline SVG scale? 回答1: To specify the coordinates within the SVG image independently of the scaled size of the

问题 How do I scale a series such that the first number in the series is 0 and last number is 1. I looked into \'approx\', \'scale\' but they do not achieve this objective. # generate series from exponential distr s = sort(rexp(100)) # scale/interpolate \'s\' such that it starts at 0 and ends at 1? # approx(s) # scale(s) 回答1: It's straight-forward to create a small function to do this using basic arithmetic: s = sort(rexp(100)) range01 <- function(x){(x-min(x))/(max(x)-min(x))} range01(s) [1] 0

问题 So I am trying to figure out how to take a range of numbers and scale the values down to fit a range. The reason for wanting to do this is that I am trying to draw ellipses in a java swing jpanel. I want the height and width of each ellipse to be in a range of say 1-30. I have methods that find the minimum and maximum values from my data set, but I won\'t have the min and max until runtime. Is there an easy way to do this? 回答1: Let's say you want to scale a range [min,max] to [a,b] . You're

问题 i am currently working on a java-based project using JFreeChart to display boxplots. My Problem is how to display a chart containing boxplots for a CategoryDataset with about 20 Categories and 5+ Series. Currently if the preferred size of the ChartPanel is not set, the Legend, Labels and Annotations are readable but the Boxplots are too small. Or the size of the ChartPanel is set so that the Boxplots have an acceptable size but then the legend, labels and annotations are horizontally