skew

How to generate distributions given, mean, SD, skew and kurtosis in R?

由 不想你离开。 提交于 2019-11-27 00:09:40
Is it possible to generate distributions in R for which the Mean, SD, skew and kurtosis are known? So far it appears the best route would be to create random numbers and transform them accordingly. If there is a package tailored to generating specific distributions which could be adapted, I have not yet found it. Thanks There is a Johnson distribution in the SuppDists package. Johnson will give you a distribution that matches either moments or quantiles. Others comments are correct that 4 moments does not a distribution make. But Johnson will certainly try. Here's an example of fitting a

Does “n * (rand() / RAND_MAX)” make a skewed random number distribution?

由 拈花ヽ惹草 提交于 2019-11-26 22:55:00
I'd like to find an unskewed way of getting random numbers in C (although at most I'm going to be using it for values of 0-20, and more likely only 0-8). I've seen this formula but after running some tests I'm not sure if it's skewed or not. Any help? Here is the full function used: int randNum() { return 1 + (int) (10.0 * (rand() / (RAND_MAX + 1.0))); } I seeded it using: unsigned int iseed = (unsigned int)time(NULL); srand (iseed); The one suggested below refuses to work for me I tried int greek; for (j=0; j<50000; j++) { greek =rand_lim(5); printf("%d, " greek); greek =(int) (NUM * (rand()

CSS Transform Skew [duplicate]

由 匆匆过客 提交于 2019-11-26 20:16:37
This question already has an answer here: Responsive CSS Trapezoid Shape 2 answers Does anyone know how to achieve skew like this: Using CSS's new transform property? As you can see I'm trying to skew both corners, anyone know if this is possible? CSS: #box { width: 200px; height: 200px; background: black; position: relative; -webkit-transition: all 300ms ease-in; } #box:hover { -webkit-transform: rotate(-180deg) scale(0.8); } #box:after, #box:before { display: block; content: "\0020"; color: transparent; width: 211px; height: 45px; background: white; position: absolute; left: 1px; bottom:

De-skew characters in binary image

由 久未见 提交于 2019-11-26 17:20:12
问题 I'm working on number plate recognition. The problem is that I have to de-skew the characters in a binary image to increase the accuracy of template matching. I have done a lot of pre-processing to remove unnecessary pixels of the image and I could segment the characters out. But unfortunately they are skewed. From... converting to greyscale to binary Then.. pre-processing techniques.. After segmentation.. As can be observed in the last image, the characters are skewed and this will lead to

Skewed Borders on a Div

由 ∥☆過路亽．° 提交于 2019-11-26 14:12:53
问题 I'm trying to skew a div, similar to this: Slant the top of a div using css without skewing text or this: http://tympanus.net/codrops/2011/12/21/slopy-elements-with-css3/ Here's an image of what I'm trying to do: Basically, I need to slant the borders in weird ways on all 4 sides . I can do this with background images, but I'd prefer some way to do this in CSS so the divs can be responsive in width and height. I'd like to find a solution that works on older browsers, but I understand I can't

How to generate distributions given, mean, SD, skew and kurtosis in R?

由 ＊爱你＆永不变心＊ 提交于 2019-11-26 12:18:58
问题 Is it possible to generate distributions in R for which the Mean, SD, skew and kurtosis are known? So far it appears the best route would be to create random numbers and transform them accordingly. If there is a package tailored to generating specific distributions which could be adapted, I have not yet found it. Thanks 回答1: There is a Johnson distribution in the SuppDists package. Johnson will give you a distribution that matches either moments or quantiles. Others comments are correct that

Does “n * (rand() / RAND_MAX)” make a skewed random number distribution?

由 时光毁灭记忆、已成空白 提交于 2019-11-26 09:03:17
问题 I\'d like to find an unskewed way of getting random numbers in C (although at most I\'m going to be using it for values of 0-20, and more likely only 0-8). I\'ve seen this formula but after running some tests I\'m not sure if it\'s skewed or not. Any help? Here is the full function used: int randNum() { return 1 + (int) (10.0 * (rand() / (RAND_MAX + 1.0))); } I seeded it using: unsigned int iseed = (unsigned int)time(NULL); srand (iseed); The one suggested below refuses to work for me I tried

CSS Transform Skew [duplicate]

由 孤者浪人 提交于 2019-11-26 07:33:29
问题 This question already has an answer here: Responsive CSS Trapezoid Shape 2 answers Does anyone know how to achieve skew like this: Using CSS\'s new transform property? As you can see I\'m trying to skew both corners, anyone know if this is possible? 回答1: CSS: #box { width: 200px; height: 200px; background: black; position: relative; -webkit-transition: all 300ms ease-in; } #box:hover { -webkit-transform: rotate(-180deg) scale(0.8); } #box:after, #box:before { display: block; content: "\0020";
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