line | 易学教程

printing dynamically string in one line in python

阅读更多关于 printing dynamically string in one line in python

问题 I'm trying to print strings in one line. I've found solutions but they don't works with windows correctly. I have text file contains names and I want to print them like this name=john then change john to next name and keep name= , I've made this code but didn't work correctly with windows: op = open('names.txt','r') print 'name=', for i in op.readlines(): print '\r'+i.strip('\n') thank you for your time 回答1: Using '\b' as suggested by senderle import sys import time sys.stdout.write('name=')

Curve fitting a series of line segments

阅读更多关于 Curve fitting a series of line segments

问题 There are a lot of curve fitting questions on SO but I can't seem to find one that addresses what I'm looking for. The scenario is simple: I capture X/Y points on a tablet screen. I'd like to draw the resulting line segments as a smooth curve instead of a series of line segments. Many apps do this, for example: Penultimate (sketching demo at 0:36) or Autodesk Sketchbook. Bezier curve algorithms take a fixed number of points to draw a curve and don't seem to work well with numerous multiple

MATLAB: set line's color and style order to be applied in parallel

阅读更多关于 MATLAB: set line's color and style order to be applied in parallel

问题 When you set DefaultAxesColorOrder and DefaultAxesLineStyleOrder MATLAB will first cycle through all colors with the first style, then again through all colors with the second style and so on. See this documentation or related question. What I would like to do is to set color order and style order to be applied independently. For example, if I set DefaultAxesColorOrder to [1 0 0; 0 1 0; 0 0 1] and DefaultAxesLineStyleOrder to '-|--|:' , the lines will be 'r-' , 'g-' , 'b-' , 'r--' , 'g--' ,

nvd3 line chart, how to remove gridlines and yaxis

阅读更多关于 nvd3 line chart, how to remove gridlines and yaxis

问题 I have made a line chart with view finder. Here is my initial code var chart = nv.models.lineWithFocusChart(); // chart.transitionDuration(500); chart.xAxis .tickFormat(d3.format(',g')); chart.xAxis .axisLabel("Date"); chart.xAxis.tickPadding(0); chart.x2Axis .tickFormat(d3.format(',g')); chart.yAxis .tickFormat(d3.format(',.2g')); chart.y2Axis .tickFormat(d3.format(',.2h')); // chart.showYAxis(false); I want to remove the y axis labels ( i.e. i want no number showing on the y axis). I also

missing value in highcharts line graph results in no line, just points

阅读更多关于 missing value in highcharts line graph results in no line, just points

问题 please take a look at this: http://jsfiddle.net/2rNzr/ var chart = new Highcharts.Chart({ chart: { renderTo: 'container' }, xAxis: { categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'] }, series: [{ data: [29.9, '', 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4] }] }); you'll notice that the data has a blank value in it (the second value), which causes the line graph to display incorrectly. Is this a bug? What is the correct

missing value in highcharts line graph results in no line, just points

阅读更多关于 missing value in highcharts line graph results in no line, just points

Exception handling — Display line number where error occurred? [duplicate]

阅读更多关于 Exception handling — Display line number where error occurred? [duplicate]

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Show line number in exception handling Can someone please tell me how to get the line number of the code where the error occurred and display it to the console? Other information like the file name or method name would be very handy. 回答1: You can print the entire stack trace by using a try/catch around the code that can throw and then using Console.WriteLine to show the exception object: try { new Program().Run(

Ultimate Guide to Line For Business (May 2019)

阅读更多关于 Ultimate Guide to Line For Business (May 2019)

Ultimate Guide to Line For Business (May 2019) By Iaroslav Kudritskiy February 4, 2019 No Comments If you're interested in the Japanese market, this is the guide for you. The Line app is a messaging app created in Japan for Japanese people. Since Line is a little different than your standard messaging app, we've gone into a little more detail than others. This is your ultimate guide to Line Official Account for Business. This post is designed to help you with your Line Official Account research, we're going to be answering questions like: What is Line? Why use Line for business? What is the

SSRS line chart not connecting data points

阅读更多关于 SSRS line chart not connecting data points

问题 I've looked high and low and can't seem to find an answer to what appears to be quite a straightforward issues (I would think). I have a line chart where there is data at several points in a series but only only one set of points link up. Does anyone know why this is? Is it to do with my data? If it is, I am struggling to see any relationships in the data that may explain this behavior. Here is what I mean: As you can see, the red diamonds should be connecting - the same could be said about

Moving a Point Along a Line in JavaScript Canvas

阅读更多关于 Moving a Point Along a Line in JavaScript Canvas

问题 Let's say that I have the coordinates of a line (25,35 45,65, 30,85 - It would be a two part line). I need to move a point (car) along that line at a constant distance every frame. How can I do this? 回答1: Consider the line (25,35 45,65). The vector from the beginning to the end is (20, 30). To move a point (x,y) in that direction, we could just add that vector: V = (20, 30) (x,y) => (x+20, y+30). If we start at the beginning of the line, we'll arrive at the end. But that's too big a step. We