line | 易学教程

Linear gradient across SVG line

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问题 I am wondering about possibility to make linearGradient across (from top to bottom) the line, as opposed to the example below where the gradient goes along (from left to right) the line. <svg xmlns="http://www.w3.org/2000/svg" version="1"> <defs> <linearGradient id="e" x1="40" y1="210" x2="460" y2="210" gradientUnits="userSpaceOnUse"> <stop stop-color="steelblue" offset="0" /> <stop stop-color="red" offset="1" /> </linearGradient> </defs> <line x1="40" y1="210" x2="460" y2="210" stroke="url(

List of coordinates between irregular points in python

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问题 Imagine we have two randomly selected points between 0 and 100 for both x and y. For example: (95,7), (35,6) Now using the simple pygame.draw.line() function we could easily draw a line between these points without any gaps. My question is, how could we find a list of all the coordinates in a single pixel thick line between the two points without any gaps in the line? Secondly, is this even possible? I am using this list of pixel for the crack maze algorithm that needs to "shoot" another

Powershell Reading text file word by word

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问题 So I'm trying to count the words of my text file however when I do get-content the array reads them letter by letter and so it doesn't let me compare them word by word. I hope you guys can help me out! Clear-Host #Functions function Get-Articles (){ foreach($Word in $poem){ if($Articles -contains $Word){ $Counter++ } } write-host "The number of Articles in your sentence: $counter" } #Variables $Counter = 0 $poem = $line $Articles = "a","an","the" #Logic $fileExists = Test-Path "text.txt" if(

Get text of view (button)

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问题 I have two column in relative layout. both column have few button with text. I want to draw a line using finger which join the button. Take the example of "match the following" like A ------------------- A. Above things are done. Now i want to get the text of button from where user start drawing the line and end the line. In above case is "A". Could any one please help me out. I want to get the text with Orange circle when user start drawing the line from finger and then text of the green

Add multiple horizontal lines in a boxplot

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问题 I know that I can add a horizontal line to a boxplot using a command like abline(h=3) When there are multiple boxplots in a single panel, can I add different horizontal lines for each single boxplot? In the above plot, I would like to add lines 'y=1.2' for 1, 'y=1.5' for 2, and 'y=2.1' for 3. 回答1: I am not sure that I understand exactly, what you want, but it might be this: add a line for each boxplot that covers the same x-axis range as the boxplot. The width of the boxes is controlled by

魔改keras中的model.summary()

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之前做项目，好奇这个函数是怎么实现的，我把源码看了一遍，魔改代码，把没用的删除,重新封装为一个类，还加上了可以输出至txt的功能 ''' class print_summary_magic_modification: def init (self, model, file_path): self.model = model self.file_path = file_path def params_nums(weights): return int(np.sum([K.count_params(p) for p in set(weights)])) def print_row(self, fields, positions): line = '' for i in range(len(fields)): if i > 0: line = line[:-1] + ' ' line += str(fields[i]) line = line[:positions[i]] line += ' ' * (positions[i] - len(line)) print(line) def print_layer_summary(self, layer, positions): try: output_shape = layer.output_shape except

Finding point is close to line and between the endpoints of the line

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问题 To find if the point is on a specified line containing two points i do the following checks: -(Boolean)isOnLine:(Line*) line point:(CGPoint) point{ //If between two dots: if (((line.first.x <= point.x && point.x <= line.last.x)||(line.first.x >= point.x && point.x >= line.last.x))&&((line.first.y<=point.y && point.y<= line.last.y)||(line.first.y>=point.y && point.y>=line.last.y)) ) { //Calculate distance: double dist = (((double)point.y - line.first.y)) / (0.00001+((double)(point.x - line

clear line on HTML5 Canvas

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问题 Is there a way to unstroke a line? On my canvas I have a line with opacity 0.5, and width of 20 pixels, let's say. Now I want to to make it longer, means to draw another line right out of the old one. when doing that, the matching points between the old and the new lines become less transparent (because they're made of two lines now). so I want to unstroke the old line and then stroke the new one. how can I do it? thanks 回答1: How you draw to a canvas is strictly defined by the API, but how it

How to get the last “step” in a step function using d3?

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问题 I'm using a simple line graph in d3 with interpolation of "step-after". var line = d3.svg.line() .x(function(d) { return x(d.date); }) .y(function(d) { return y(d.close); }); // Note that with step-after, the last data point shows no "step". Why? line.interpolate('step-after'); (http://jsfiddle.net/hrabinowitz/zCmHw/1/) This shows a horizontal line after each data point except the last one . For small numbers of points, if you think of the x axis as time, this is unintuitive, because the last

PHPWord how to add text break / new line while in a text run

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问题 How can I add a text break or go to the next line/row while in a text run? I tried to just do $section->addTextBreak(2); while in the text run but it just added the breaks to the section after the text run. I also tried $textrun->addTextBreak(2); but it gave me a fatal error. Any responses would be greatly appreciated. 回答1: I'm afraid that this will not be possible with current version. I don't have deep understanding of this library, but from looking at the code, I found out that the textRun