大约有 8,000 项符合查询结果(耗时:0.0224秒) [XML]

https://stackoverflow.com/ques... 

Scatterplot with too many points

... y, col="#00000033")) The first six numbers after the # are the color in RGB hex and the last two are the opacity, again in hex, so 33 ~ 3/16th opaque. share | improve this answer | ...
https://stackoverflow.com/ques... 

C-like structures in Python

...hings where you would use a struct in C (something like x,y coordinates or RGB colors for example). For everything else you can use dictionary, or a utility class like this one: >>> class Bunch: ... def __init__(self, **kwds): ... self.__dict__.update(kwds) ... >>> my...
https://stackoverflow.com/ques... 

How to check if a file is a valid image file?

... not recognized image file type. List of currently recognized image types: rgb, gif, pbm, pgm, ppm, tiff, rast, xbm, jpeg, bmp, png, webp, exr. – patryk.beza Apr 6 '16 at 15:29 ...
https://stackoverflow.com/ques... 

Normalize data in pandas

...eated as a 7 effectively) with a midpoint of 2, but shrink it to fit a 256 RGB colormap: #In[1] NormData([-5,2,10],low=-7,center=1,hi=7,shrinkfactor=2./256) #Out[1] [0.1279296875, 0.5826822916666667, 0.99609375] It can also turn your data inside out... this may seem odd, but I found it useful for...
https://stackoverflow.com/ques... 

Input placeholders for Internet Explorer

...normal sans-serif; left: 5px; top: 3px; width: 147px; height: 15px; color: rgb(186, 186, 186); position: absolute; overflow-x: hidden; font-size-adjust: none; font-stretch: normal;" for="placeholder1314588474481">Hi Mom</label> </span> </label> There are also other shims the...
https://stackoverflow.com/ques... 

How can I resize an image using Java?

...izing..."); int imageType = preserveAlpha ? BufferedImage.TYPE_INT_RGB : BufferedImage.TYPE_INT_ARGB; BufferedImage scaledBI = new BufferedImage(scaledWidth, scaledHeight, imageType); Graphics2D g = scaledBI.createGraphics(); if (preserveAlpha) { g.setComp...
https://stackoverflow.com/ques... 

Change Active Menu Item on Page Scroll?

...%; } .menu { width: 100%; height: 75px; background-color: rgba(0, 0, 0, 1); position: fixed; background-color:rgba(4, 180, 49, 0.6); -webkit-transition: all 0.4s ease; -moz-transition: all 0.4s ease; -o-transition: all 0.4s ease; transition: all 0.4s ea...
https://stackoverflow.com/ques... 

How to check if a string is a valid hex color representation?

...Here's my stab at a compatible (Chrome54 & MSIE11) function to get the RGBA values of a "color" in any of the formats --be it 'green', or '#FFF', or '#89abcd', or 'rgb(0,0,128)', or 'rgba( 0, 128, 255, 0.5)'. /* getRGBA: Get the RGBA values of a color. If input is not a color, returns NULL,...
https://stackoverflow.com/ques... 

Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?

...diaStore API is probably throwing away the alpha channel (i.e. decoding to RGB565). If you have a file path, just use BitmapFactory directly, but tell it to use a format that preserves alpha: BitmapFactory.Options options = new BitmapFactory.Options(); options.inPreferredConfig = Bitmap.Config.ARGB...
https://stackoverflow.com/ques... 

Dynamically change color to lighter or darker by percentage CSS (Javascript)

...on I found: Use CSS variables to define your colors in HSL instead of HEX/RGB format, then use calc() to manipulate them. Here's a basic example: :root { --link-color-h: 211; --link-color-s: 100%; --link-color-l: 50%; --link-color-hsl: var(--link-color-h), var(--link-color-s), var...