Create the initial plot: library(ggplot2) d <- rnorm(100) df <- data.frame( x = 1, y = d, group = rep(c(“gr1”, “gr2”), 50) ) p <- ggplot(df) + stat_boxplot( aes( x = x, y = y, color = group ), fill = “transparent” # for the inside of the boxplot ) The fastest way to modify … Read more
Use the matplotlib savefig function with the keyword argument transparent=True to save the image as a png file. In [30]: x = np.linspace(0,6,31) In [31]: y = np.exp(-0.5*x) * np.sin(x) In [32]: plot(x, y, ‘bo-‘) Out[32]: [<matplotlib.lines.Line2D at 0x3f29750>] In [33]: savefig(‘demo.png’, transparent=True) Result: Of course, that plot doesn’t demonstrate the transparency. Here’s a screenshot … Read more
This worked for me, mWebView.setBackgroundColor(Color.TRANSPARENT);
Why bother replicating the effect? Just draw a UIToolbar behind your view. myView.backgroundColor = [UIColor clearColor]; UIToolbar* bgToolbar = [[UIToolbar alloc] initWithFrame:myView.frame]; bgToolbar.barStyle = UIBarStyleDefault; [myView.superview insertSubview:bgToolbar belowSubview:myView];
I am also looking for an answer to this question, (to clarify, I want to be able to draw an image with user defined opacity such as how you can draw shapes with opacity) if you draw with primitive shapes you can set fill and stroke color with alpha to define the transparency. As far … Read more
Android uses hexadecimal ARGB values, which are formatted as #AARRGGBB. That first pair of letters, the AA, represent the alpha channel. You must convert your decimal opacity values to a hexadecimal value. Here are the steps: Alpha Hex Value Process Take your opacity as a decimal value and multiply it by 255. So, if you … Read more
If anybody is wondering how to achieve this in iOS 7+, here’s a solution (iOS 6 compatible too) In Objective-C [self.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault]; self.navigationBar.shadowImage = [UIImage new]; self.navigationBar.translucent = YES; In swift 3 (iOS 10) self.navigationBar.setBackgroundImage(UIImage(), for: .default) self.navigationBar.shadowImage = UIImage() self.navigationBar.isTranslucent = true In swift 2 self.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .Default) self.navigationBar.shadowImage = UIImage() self.navigationBar.translucent … Read more
Yes, it is possible using filter: dropShadow(x y blur? spread? color?), either in CSS or inline: img { width: 150px; -webkit-filter: drop-shadow(5px 5px 5px #222); filter: drop-shadow(5px 5px 5px #222); } <img src=”https://cdn.freebiesupply.com/logos/large/2x/stackoverflow-com-logo-png-transparent.png”> <img src=”https://cdn.freebiesupply.com/logos/large/2x/stackoverflow-com-logo-png-transparent.png” style=”-webkit-filter: drop-shadow(5px 5px 5px #222); filter: drop-shadow(5px 5px 5px #222);”>
You use an addtional attribute; fill-opacity: This attribute takes a decimal number between 0.0 and 1.0, inclusive; where 0.0 is completely transparent. For example: <rect … fill=”#044B94″ fill-opacity=”0.4″/> Additionally you have the following: stroke-opacity attribute for the stroke opacity for the entire object
Use the below code for black: <color name=”black”>#000000</color> Now if I want to use opacity then you can use the below code: <color name=”black”>#99000000</color> <!– 99 is for alpha and others pairs zero’s are for R G B –> And below for opacity code: and all opacity level here Hex Opacity Values 100% — FF … Read more