masking

We have one requirement to mask a particular table column using a Oracle function which gives persistent masked output string. We tried Oracle Hash Function but it does not give String type return value. We tried Oracle Random function (dbms_random.string) but it does not give Persistent output string. I read on internet that this is called deterministic masking. But we do not want to use Oracle Enterprise Manager; however we require a direct Oracle function. Please suggest. This problem is easily solved in 12c with the function STANDARD_HASH . The solution in previous versions is only

I wanted to mask a Bitmap with a black and white alpha mask. My mask image is black and white, the BLACK area means TRANSPARENT and WHITE area means OPAQUE. What I need is: When I use this mask image to mask any other image, the area of resultant image should TRANSPARENT if the corresponding area of mask image is BLACK. Otherwise the area of resultant image should be OPAQUE. I have attached the sample images. Please help me with this guys. Sample Image: Sample Image for Masking What I have tried so far: The following methods work fine. But they are very slow. I needed some solution that is

Since my form has no labels, I would like to be able to use a different placeholder with Angular and Angular-UI-Utils-Mask: <div ng-controller="myController"> <input type="text" ng-model="date" ui-mask="99/99/9999" placeholder="Birth Date"/> </div> Using jquery-inputmask it works like a charm, but I had too many problems to make it work with Angular so I'm now trying to go Angular way, but Angular shows my input as: Bi/th/Date Here's a fiddle to show it: http://jsfiddle.net/XS4R6/ I also saw some people talking about ´ui-mask-placeholder´, but it does nothing. Is there a way to accomplish this

I am trying to create a clipping mask in VML that would correspond to clip-path in SVG? Is that possible? Based on numerous, but fairly limited, examples I have tried drawing the shape: <vml:group style="WIDTH: 1px; HEIGHT: 1px" class=vml-element coordsize = "1,1"> <vml:shape style="WIDTH: 1px; HEIGHT: 1px" id=vectorObject2 class=vml-element _fill-color="red" _fill-opacity="1" _stroke-color="black" _stroke-opacity="1" _stroke-width="1" coordsize = "1,1" filled = "t" fillcolor = "red" stroked = "t" strokecolor = "black" strokeweight = ".75pt" path = "m0,0 l100,0,0,100 xe"> <vml:fill class=vml

I have a pandas dataset that I want to downsize (remove all values under x). The mask is df[my_column] > 50 I would typically just use df = df[mask] , but want to avoid making a copy every time, particularly because it gets error prone when used in functions (as it only gets altered in the function scope). What is the best way to subset a dataset inplace? I was thinking of something along the lines of df.drop(df.loc[mask].index, inplace = True) Is there a better way to do this, or any situation where this won't work at all? You are missing the inplace parameter : df.drop(df[df.my_column < 50]

The directive I have created uses the function setFormatting to mask the text value in an input field. scope.$watch(element, function() { modelCtrl.$setViewValue(setFormatting(element.val(), attrs.symbol)); modelCtrl.$render(); }); element.bind('blur', function() { modelCtrl.$setViewValue(setFormatting(element.val(), attrs.symbol)); modelCtrl.$render(); }); The scope.$watch applies the mask when the content is loaded/applied the first time, the element.bind applies the mask for the other times. The scope.$watch is storing the symbol (if there is one) as part of the ng-model variable. The

In one of my iOS applications, I am trying to cut a portion of an image using CGImageMask . I have succeeded in masking the image with the following code: - (UIImage *)maskImage:(UIImage *)referenceImage withMask:(UIImage *)maskImage { CGImageRef maskRef = maskImage.CGImage; CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef), CGImageGetHeight(maskRef), CGImageGetBitsPerComponent(maskRef), CGImageGetBitsPerPixel(maskRef), CGImageGetBytesPerRow(maskRef), CGImageGetDataProvider(maskRef), NULL, false); CGImageRef masked = CGImageCreateWithMask([referenceImage CGImage], mask); return

Duplicate so don't negative my reputation. My mask image is : My output is : - (UIImage*)maskImage:(UIImage *)image withMask:(UIImage *)maskImage { CGImageRef maskRef = maskImage.CGImage; CGImageRef mask = CGImageMaskCreate( CGImageGetWidth(maskRef), CGImageGetHeight(maskRef), CGImageGetBitsPerComponent(maskRef), CGImageGetBitsPerPixel(maskRef), CGImageGetBytesPerRow(maskRef), CGImageGetDataProvider(maskRef), NULL, false ); CGImageRef masked = CGImageCreateWithMask(image.CGImage, mask); CGImageRelease(mask); return [UIImage imageWithCGImage:masked]; } So how to create my own mask image? Thanks