sin | A mini blog engine in Sinatra with hAtom and MetaWeblog API | Blog library

by kastner Ruby Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | sin Summary

sin is a Ruby library typically used in Web Site, Blog applications. sin has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Sin - The lazy Blogging engine in Sinatra.

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Support

sin has a low active ecosystem.

It has 47 star(s) with 7 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

sin has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of sin is current.

Quality

sin has 0 bugs and 0 code smells.

Security

sin has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

sin code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

sin does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

sin releases are not available. You will need to build from source code and install.

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sin Key Features

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sin Examples and Code Snippets

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Community Discussions

Trending Discussions on sin

How to multiply several vectors by one matrix at once (in numpy)?

Padding scipy affine_transform output to show non-overlapping regions of transformed images

How to make a graph for a given function in R

How to automate legends for a new geom in ggplot2?

Finding straight lines from tightly coupled lines and noise curvy lines

Problem resizing plot on tkinter figure canvas

Succinctly Reproducing the following graph with R and ggplot2

JavaScript pre-allocated array Uncaught RangeError: Invalid Array Length

Converting spherical coordinates into Cartesian and then converting back into Cartesian isn't giving the desired output

How do I rotate text around an oval?

QUESTION

How to multiply several vectors by one matrix at once (in numpy)?

Asked 2022-Mar-29 at 11:58

I have a 2x2 rotation matrix and several vectors stored in a Nx2 array. Is there a way to rotate them all (i.e. multiply them all by the rotation matrix) at once?

I'm sure there is a numpy method for that, it's just not obvious.

...

ANSWER

Answered 2022-Mar-29 at 11:47

Because m has shape (2,2) and vectors has shape (4,2), you can simply do

Source https://stackoverflow.com/questions/71661228

QUESTION

Padding scipy affine_transform output to show non-overlapping regions of transformed images

Asked 2022-Mar-28 at 11:54

I have source (src) image(s) I wish to align to a destination (dst) image using an Affine Transformation whilst retaining the full extent of both images during alignment (even the non-overlapping areas).

I am already able to calculate the Affine Transformation rotation and offset matrix, which I feed to scipy.ndimage.interpolate.affine_transform to recover the dst-aligned src image.

The problem is that, when the images are not fuly overlapping, the resultant image is cropped to only the common footprint of the two images. What I need is the full extent of both images, placed on the same pixel coordinate system. This question is almost a duplicate of this one - and the excellent answer and repository there provides this functionality for OpenCV transformations. I unfortunately need this for scipy's implementation.

Much too late, after repeatedly hitting a brick wall trying to translate the above question's answer to scipy, I came across this issue and subsequently followed to this question. The latter question did give some insight into the wonderful world of scipy's affine transformation, but I have as yet been unable to crack my particular needs.

The transformations from src to dst can have translations and rotation. I can get translations only working (an example is shown below) and I can get rotations only working (largely hacking around the below and taking inspiration from the use of the reshape argument in scipy.ndimage.interpolation.rotate). However, I am getting thoroughly lost combining the two. I have tried to calculate what should be the correct offset (see this question's answers again), but I can't get it working in all scenarios.

Translation-only working example of padded affine transformation, which follows largely this repo, explained in this answer:

...

ANSWER

Answered 2022-Mar-22 at 16:44

If you have two images that are similar (or the same) and you want to align them, you can do it using both functions rotate and shift :

Source https://stackoverflow.com/questions/71516584

QUESTION

How to make a graph for a given function in R

Asked 2022-Mar-26 at 15:46

Suppose there is this function sqrt(x^2)+0.9*sqrt(3.3-x^2)*sin(30*pi*x) This function generate plot in the shape of a heart

Is there the way using ggplot2 reproduce this function to get a red heart as output? Thanks you for your help.

...

ANSWER

Answered 2022-Mar-26 at 15:23

A possible solution:

Source https://stackoverflow.com/questions/71629197

QUESTION

How to automate legends for a new geom in ggplot2?

Asked 2022-Jan-30 at 18:08

I've built this new ggplot2 geom layer I'm calling geom_triangles (see https://github.com/ctesta01/ggtriangles/) that plots isosceles triangles given aesthetics including x, y, z where z is the height of the triangle and the base of the isosceles triangle has midpoint (x,y) on the graph.

What I want is for the geom_triangles() layer to automatically provide legend components for the height and width of the triangles, but I am not sure how to do that.

I understand based on this reference that I may need to adjust the draw_key argument in the ggproto StatTriangles object, but I'm not sure how I would do that and can't seem to find examples online of how to do it. I've been looking at the source code in ggplot2 for the draw_key functions, but I'm not sure how I would introduce multiple legend components (one for each of height and width) in a single draw_key argument in the StatTriangles ggproto.

...

ANSWER

Answered 2022-Jan-30 at 18:08

I think you might be slightly overcomplicating things. Ideally, you'd just want a single key drawing method for the whole layer. However, because you're using a Stat to do the majority of calculations, this becomes hairy to implement. In my answer, I'm avoiding this.

Let's say I'd want to use a geom-only implementation of such a layer. I can make the following (simplified) class/constructor pair. Below, I haven't bothered width_scale or height_scale parameters, just for simplicity.

Class

Source https://stackoverflow.com/questions/70916440

QUESTION

Finding straight lines from tightly coupled lines and noise curvy lines

Asked 2022-Jan-17 at 20:48

I have this image for a treeline crop. I need to find the general direction in which the crop is aligned. I'm trying to get the Hough lines of the image, and then find the mode of distribution of angles.

I've been following this tutorialon crop lines, however in that one, the crop lines are sparse. Here they are densely pack, and after grayscaling, blurring, and using canny edge detection, this is what i get

...

ANSWER

Answered 2022-Jan-02 at 14:10

You can use a 2D FFT to find the general direction in which the crop is aligned (as proposed by mozway in the comments). The idea is that the general direction can be easily extracted from centred beaming rays appearing in the magnitude spectrum when the input contains many lines in the same direction. You can find more information about how it works in this previous post. It works directly with the input image, but it is better to apply the Gaussian + Canny filters.

Here is the interesting part of the magnitude spectrum of the filtered gray image:

The main beaming ray can be easily seen. You can extract its angle by iterating over many lines with an increasing angle and sum the magnitude values on each line as in the following figure:

Here is the magnitude sum of each line plotted against the angle (in radian) of the line:

Based on that, you just need to find the angle that maximize the computed sum.

Here is the resulting code:

Source https://stackoverflow.com/questions/70545797

QUESTION

Problem resizing plot on tkinter figure canvas

Asked 2022-Jan-15 at 02:30

Python 3.9 on Mac running OS 11.6.1. My application involves placing a plot on a frame inside my root window, and I'm struggling to get the plot to take up a larger portion of the window. I thought rcParams in matplotlib.pyplot would take care of this, but I must be overlooking something.

Here's what I have so far:

...

ANSWER

Answered 2022-Jan-14 at 23:23

try something like this:

Source https://stackoverflow.com/questions/70598913

QUESTION

Succinctly Reproducing the following graph with R and ggplot2

Asked 2021-Dec-27 at 22:55

I borrowed the R code from the link and produced the following graph:

Using the same idea, I tried with my data as follows:

...

ANSWER

Answered 2021-Dec-27 at 22:55

You can do calculations within a function for the x and y values to construct the ggplot which extends the circle all the way round and gives labels correct heights.

I've adapted a function to work with other datasets. This takes a dataset in a tidy format, with:

a 'year' column
one row per 'event'
a grouping variable (such as country)

I've used Nobel laurate data from here as an example dataset to show the function in practice. Data setup:

Source https://stackoverflow.com/questions/70393322

QUESTION

JavaScript pre-allocated array Uncaught RangeError: Invalid Array Length

Asked 2021-Dec-02 at 16:18

I have a small loop of code which is throwing Uncaught RangeError: Invalid Array Length

I was able to reproduce it with just this in the Google Chrome console

...

ANSWER

Answered 2021-Dec-02 at 16:18

The real reason is in V8 memory optimization. When you store integers - it stores the 32 bit number in place, But when you store double-number - it is stored differently (as an object) - so yValues array contains the reference but the actual value stored in heap. So in your example you just used all heap memory. To see the limit, use: console.memory and you'll see something like this:

Source https://stackoverflow.com/questions/70198991

QUESTION

Converting spherical coordinates into Cartesian and then converting back into Cartesian isn't giving the desired output

Asked 2021-Oct-06 at 09:28

I'm trying to write two functions for converting Cartesian coordinates to spherical coordinates and vice-versa. Here are the equations that I've used for the conversions (also could be found on this Wikipedia page):

And

Here is my spherical_to_cartesian function:

...

ANSWER

Answered 2021-Oct-06 at 09:28

You seem to be giving your angles in degrees, while all trigonometric functions expect radians. Multiply degrees with math.pi/180 to get radians, and multiply radians with 180/math.pi to get degrees.

Source https://stackoverflow.com/questions/69462888

QUESTION

How do I rotate text around an oval?

Asked 2021-Aug-09 at 20:44

I'd like to revolve text around an oval. Some slight distortion occurs on each character however the more extreme (i.e. the less of a perfect circle) the oval becomes. Ideally this method would render text nicely on an oval of any height and width ratio, and even other shapes such as rounded rectangles.

My approach so far has been to:

Find the edge of the oval
Rotate a point around the distorted oval using trigonometry
Draw text() at this position
Rotate this text() according to its position
Do this over a for loop, looping over every character in a provided string.

The characters gain strange spacing (even with textWidth) and strange rotation (even when calculated dynamically). You can see that in the below snippet, particularly on the 'nn' of 'spinning' and 'ie' of 'piece'.

...

ANSWER

Answered 2021-Jul-26 at 11:35

From what I suspect this strange spacing between characters is not due to an error in code. It's quite simply put the same reason you can't make a very good map of earth. In p5js the ellipses and circles aren't perfect.

At some points of the ellipse, the lines within the circle that make up the pixels are longer at some points than others. I am not sure how to explain it well, but the best way I can explain it is with the same concept as with strafing in video games.

Credits to Dan Violet Sagmiller (Game Developer)

In video games, game developers sometimes lower the speed of players when they move forward and to the side at the same time (diagonally). This is because of some complicated math that shows that strafing causes a player to move faster.

The only reason that strafing happens is due to the way that game developers change player movement. Rather than using trigonometry or rotational mathematics with vectors, they use transformational logic (+, -). This usually increases performance in games. Based on your code you are also using transformational logic:

Source https://stackoverflow.com/questions/68528749

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

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Install sin

You can download it from GitHub.
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