axis

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is quaternion rotation just a vector with X,Y,Z which the object will rotate towards, and a roll which turns the object on its axis? Is it that simple? Meaning if you have X=0, Z=0 and Y=1 the object will face upwards? And if you have Y=0, Z=0 and X=1 the object will face to the right? (assuming X right, Y up and Z depth) 回答1: A quaternion has 4 components, which can be related to an angle θ and an axis vector n . The rotation will make the object rotate about the axis n by an angle θ. For example, if we have an cube like ______ |\ 6 \ | \__

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have the following example of HTML: Foo bar lorem ipsum etc Bar baz dum dum dum poopfiddles I'm looking to extract all paragraphs following the 'Foo bar' header, until I reach the 'Bar baz' header (the text for the 'Bar baz' header is unknown, so unfortunately I can't use the answer provided by bougyman). Now I can of course using something like //h2[text()='Foo bar']/following::p but that of course will grab all paragraphs following this header. So I have the option to traverse the nodeset and push paragraphs into an Array until the text

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to break the x-axis of a plot of a cumulative distribution function for which I use the function plot.stepfun , but don't seem to be able to figure out how. Here's some example data: set.seed(1) x <- sample(seq(1,20,0.01),300,replace=TRUE) Then I use the function ecdf to get the empirical cumulative distribution function of x: x.cdf <- ecdf(x) And I change the class of x.cdf to stepfun, because I prefer to call plot.stepfun directly over using plot.ecdf (which also uses plot.stepfun , but has fewer possibilities to customize the plot)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have the following dataframe time X Y X_t0 X_tp0 X_t1 X_tp1 X_t2 X_tp2 0 0.002876 0 10 0 NaN NaN NaN NaN NaN 1 0.002986 0 10 0 NaN 0 NaN NaN NaN 2 0.037367 1 10 1 1.000000 0 NaN 0 NaN 3 0.037374 2 10 2 0.500000 1 1.000000 0 NaN 4 0.037389 3 10 3 0.333333 2 0.500000 1 1.000000 5 0.037393 4 10 4 0.250000 3 0.333333 2 0.500000 .... 1030308 9.962213 256 268 256 0.000000 256 0.003906 255 0.003922 1030309 10.041799 0 268 0 -inf 256 0.000000 256 0.003906 1030310 10.118960 0 268 0 NaN 0 -inf 256 0.000000 I tried with the following df.dropna

I've been seeking for this problem through all google, stackoverflow and more. And I found a lot of related answers to it, but not a real solution. I'm consuming an Axis Service from a .NET Client but the return is always null, no matter what parameters I send, always is null. So i started to look, and I tried to consume it from the SOAPUI , and it worked!. So my first thought was, .NET is doing something wrong, and i searched and searched and I found that there are some problems with the namespaces. Related post here So after this, I tried to consume the Service via Service Reference, Web

.ndim ：维度 .shape ：各维度的尺度 （2，5） .size ：元素的个数 10 .dtype ：元素的类型 dtype(‘int32’) .itemsize ：每个元素的大小，以字节为单位 ，每个元素占4个字节 ndarray数组的创建 np.arange(n) ; 元素从0到n-1的ndarray类型 np.ones(shape): 生成全1 np.zeros((shape)， ddtype = np.int32) ： 生成int32型的全0 np.full(shape, val): 生成全为val np.eye(n) : 生成单位矩阵 np.ones_like(a) : 按数组a的形状生成全1的数组 np.zeros_like(a): 同理 np.full_like (a, val) : 同理 np.linspace（1,10,4）： 根据起止数据等间距地生成数组 np.linspace（1,10,4, endpoint = False）：endpoint 表示10是否作为生成的元素 np.concatenate(): -数组的维度变换 .reshape(shape) : 不改变当前数组，依shape生成 .resize(shape) : 改变当前数组，依shape生成 .swapaxes(ax1, ax2) : 将两个维度调换 .flatten() :

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Building on my previous question I'd like to add second axis label on the opposite side of the plot. The data frame looks like: test <- structure(list(characteristic = structure(c(1L, 2L, 3L, 1L, 2L ), .Label = c("Factor1", "Factor2", "Factor3"), class = "factor"), es = c(1.2, 1.4, 1.6, 1.3, 1.5), ci_low = c(1.1, 1.3, 1.5, 1.2, 1.4), ci_upp = c(1.3, 1.5, 1.7, 1.4, 1.6), label = structure(c(1L, 3L, 5L, 2L, 4L), .Label = c("1.2 (1.1, 1.3)", "1.3 (1.2, 1.4)", "1.4 (1.3, 1.5)", "1.5 (1.4, 1.6)", "1.6 (1.5, 1.7)"), class = "factor"), set =

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to draw this following graph using ggplot2 package, but somehow the axis won't show up. the ticks are there, just not the axis line. I have used the theme(axis.line=element_line()) function, but it wouldn't work. Here is my code: library(ggplot2) ggplot(data = soepl_randsub, aes(x = year, y =satisf_org, group = id)) + geom_point() + geom_line() +ylab("Current Life Satisfaction") +theme_bw() + theme(plot.background = element_blank(), panel.grid.major = element_blank(), panel.grid.minor = element_blank() ) + theme(panel.border=

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am currently trying to use OpenGL (With SDL) to draw a cube to the location where I left click in the screen and then get it to point at the position in the screen where I right click. I can successfully draw a cube at my desired location using gluUnproject - Meaning I already know the coordinates of which my cube is situated. However I do not know how to calculate all of the angles required to make my cube point at the new location. Of course I am still using gluUnproject to find the coordinates of my right click, but I only know how to