gradient

I'm trying to trace a route on a MKMapView using overlays (MKOverlay). However, depending on the current speed, I want to do something like the Nike app with a gradient while tracing the route, if the color is changing (for example, from green to orange if a user is driving from 65mph to 30mph). Here's a screenshot of what I want: So every 20 meters, I adding an overlay from the old to the new coordinates using: // Create a c array of points. MKMapPoint *pointsArray = malloc(sizeof(CLLocationCoordinate2D) * 2); // Create 2 points. MKMapPoint startPoint = MKMapPointForCoordinate

I've been trying to use a linear gradient on top of my background image in order to get a fading effect on the bottom of my background from black to transparent but can't seem to be able to make it show. I've read other cases here and examples but none of them are working for me. I can only see the gradient or the image but not both of them. Here's the link Just click on the first logo, ignore that effect, what I'm trying is in the body in the whole site after that. This is my css code: body { background: url('http://www.skrenta.com/images/stackoverflow.jpg') no-repeat, -webkit-gradient(linear

I need to visualize some data. It's basic 2D grid, where each cell have float value. I know how to e.g. assign color to value and paint grid in OpenCV. But the point here is that there are so many values so it's nearly impossible to do that. I am looking for some method, where I could use gradient. For example value -5.0 will be represented by blue, 0 - black, and +5.0 as red. Is there any way to do that in Python? Here is sample data I am talking about A B C D A -1.045 2.0 3.5 -4.890 B -5.678 3.2 2.89 5.78 Yann Matplotlib has the imshow method for plotting arrays: import matplotlib as mpl

I'm plotting the plot below using R's plot function. It is a plot of a vector 'shiftTime' of shift in time. I have another vector 'intensity' of the intensity values ranging from ~3 to ~9. I want to color my points in the plot based on those values with a color gradient. The examples I can find color on the value of the actual plotted points, so in this case the values of the vector 'shiftTime'. Is it also possible to use a different vector, as long as the corresponding values are on the same index? Here's a solution using base R graphics: #Some sample data x <- runif(100) dat <- data.frame(x

This question already has an answer here: Use CSS3 transitions with gradient backgrounds 15 answers Is there really no way to animate a gradient-background with CSS? something like: @-webkit-keyframes pulse { 0% { background: -webkit-gradient(linear, left top, left bottom, color-stop(0, rgb(196,222,242)), color-stop(0.5, rgb(242,242,242)), color-stop(1, rgb(240,240,240))); } 50% { background: -webkit-gradient(linear, left top, left bottom, color-stop(0, rgb(222,252,255)), color-stop(0.5, rgb(242,242,242)), color-stop(1, rgb(240,240,240))); } 100% { background: -webkit-gradient(linear, left top

Is there a generator , or an easy way to generate text like this but without having to define every letter So something like this: .rainbow { background-image: -webkit-gradient( linear, left top, right top, color-stop(0, #f22), color-stop(0.15, #f2f), color-stop(0.3, #22f), color-stop(0.45, #2ff), color-stop(0.6, #2f2),color-stop(0.75, #2f2), color-stop(0.9, #ff2), color-stop(1, #f22) ); background-image: gradient( linear, left top, right top, color-stop(0, #f22), color-stop(0.15, #f2f), color-stop(0.3, #22f), color-stop(0.45, #2ff), color-stop(0.6, #2f2),color-stop(0.75, #2f2), color-stop(0.9