gradient

R: Gradient plot on a shapefile

由 心已入冬 提交于 2019-12-10 14:45:27
问题 I currently have a shapefile of the UK and have plot the population of species in different regions of the UK. So far I have just plotted 3 levels of species population and coloured them red=high, orange=med, green=low. But what I would like to do would be to have a gradient plot instead of being bounded by just 3 colours. So far I have a table called Count that has the regions as the column names and then the count of species for each region below. My lowest count being 0 and my highest

jQuery gradient plugin?

由 懵懂的女人 提交于 2019-12-10 13:13:27
问题 Is there any good jQuery gradient plugin. I found one, but it uses old jQuery, when I use latest, so it probably won't work with latest version. 回答1: I dont know if you've already tested these plugins: JQuery Gradient Plugin: http://www.ajaxupdates.com/jquery-gradient-plugin/ JQuery Gradient Plugin II http://plugins.jquery.com/project/gradient I hope you can use one of them. Here is a third, more up to date, jQuery gradient plugin JQuery Gradient Picker https://github.com/tantaman/jquery

Rectangular Gradient with HTML5 Canvas Element

由 一笑奈何 提交于 2019-12-10 13:12:44
问题 How can I draw a rectangle with a gradient effect like the one pictured below using the HTML5 canvas element? Edit: Thanks for all the feedback. Yes, I have already tried many methods. For example, can I use the createRadialGradient method as @Loktar suggests? Here is some sample code: <html> <head> <title>test</title> <script type="application/x-javascript"> function draw() { var canvas = document.getElementById("canvas"), ctx = canvas.getContext("2d"); var grad1 = ctx.createRadialGradient

Determining image gradient direction from sobel?

由 牧云@^-^@ 提交于 2019-12-10 13:08:19
问题 I am attempting to determine the image gradient direction using the results from openCV's Sobel method. I understand this should be a very simple task. I have copied the methods from a number of resources and answers from here but whatever I do the resultant directions are always between 0 - 57 degrees (I would expect the range to be from 0-360). I believe all the depths are correct. I have tried calculating the direction using the 16S data as well as 8U data. I just can't see where I'm going

How to make a background using CSS gradient with flat color?

由 我的未来我决定 提交于 2019-12-10 12:34:23
问题 A backgrond like this with same height of red and yellow. 回答1: Using Colorzilla's gradient generator, just set two colors to the same % location and you'll get a hard edge between the two colors. background: #ffff00; /* Old browsers */ background: -moz-linear-gradient(top, #ffff00 30%, #ffff00 30%, #fe0000 30%); /* FF3.6+ */ background: -webkit-gradient(linear, left top, left bottom, color-stop(30%,#ffff00), color-stop(30%,#ffff00), color-stop(30%,#fe0000)); /* Chrome,Safari4+ */ background:

Generating color gradient in Python

由 笑着哭i 提交于 2019-12-10 12:14:34
问题 i have a list of RGB colors and need to draw gradient between them in python. Have you any suggestions how to make it usin PIL library? EDIT: I get this: def gradient(list_of_colors): width = 600 height = 480 img = Image.new("RGB", (width, height)) draw = ImageDraw.Draw(img) for i in range(len(list_of_colors)): r1,g1,b1 = list_of_colors[i] for x in range(width/len(list_of_colors)): colour = (r1,g1,b1) draw.line((x+(width/len(list_of_colors)*i), 0, x+(width/len(list_of_colors)*i), height),

ImagMagick: How to add a gradient splice to an image using one convert command?

由 浪尽此生 提交于 2019-12-10 11:39:58
问题 Is it possible to add a gradient splice to the bottom of an image? It seems that gradient option requires -size, which I cannot provide because size of the image may varry. It's possible with convert and compose but I want to use only one command. Something like this (note that this is invalid currently): convert -fill gradient:black-white -gravity south splice 0x20 image1.jpg image2.jpg 回答1: My suggestion to you is to use -append instead of -splice . The image size may vary, but you can

Crossbrowser css gradient in IE10, IE11

由 ε祈祈猫儿з 提交于 2019-12-10 10:31:56
问题 I did a gradient for dark buttons in all browsers, it appears good, except IE10, IE11 versions. Light stripe on top and bottom. I generate gradient by colorzilla gradient editor. link to buttons HTML <div class="dark-button">div button</div> CSS .dark-button { background: #0874b6; /* Old browsers */ /* IE9 SVG, needs conditional override of 'filter' to 'none' */ background: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiA

define color gradient for negative and positive values scale_fill_gradientn()

由 时光怂恿深爱的人放手 提交于 2019-12-10 07:27:49
问题 R version 3.1.1 (2014-07-10) Platform: i386-w64-mingw32/i386 (32-bit) I am working on a heatmap with ggplot2() values from -1 to +1. I want to achieve that negative values have a bluish gradiend from darkblue(-1) to lightblue(-0.00000001) and the positive values a redish one from lightred(0.00000001) to darkred(1). Small values should not fade into white, as zeros should have white color and there shall be a visible contrast between 0 and a small value. NA values should be grey. I tried scale

How to make the background gradient of a JPanel

由 点点圈 提交于 2019-12-10 06:10:18
问题 I want to know how to make background gradient which is in another JPanel. Many articles found in internet,but all of them had demostrated how to overide the paintComponent() of the JPanel not how to do for a jPanel which is inside it. I use Netbeans IDE. I created a new JPanel class and could overide its paintComponent(). I have another jpanel on it (dragged & dropped on to the parent JPanel). I want to make its background gradient. Here is how I tried for parent. It worked. How can I
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