greta | simple and scalable statistical modelling in R | Analytics library

I want to create an author index.
In my dataframe I have a column for the author and another with a long string, for each page the name of the author appears on. Because the document I am receiving these numbers from are always double pages it is always something like 3 - 4 or 17 - 18

What I've Tried
I tried to solve it by splitting the string by the ,, exploding it, and splitting it again by -, and trimming each string of the resulting sublist. So now I got a list for each double page, with 2 strings for the starting and the end page -> e.g. ['8','9'].

Target Goal
From these lists for every author I would like to sort them by the starting page (first entry in each list) I can't figure it out. In the minimal reproducible example below, the index 2 should be ['8', '9'] ['158', '159'], ['178', '179']

And even better converted back into one long string '8 - 9, 158 - 159, 178 - 179'

MRE

I am trying to display data to a Gridview in ASP.Net (using VB) but the table won't appear on my page. I have created a small test page to see what is the problem, but I can't seem to find any issues. Here is the code:

I am working on assigning random priorities (i.e. high, medium, low) to a list for a ServiceDesk assignment.

Before that, I was wondering how to go about storing (and printing) an array in said priority queue. This is currently what I have.

*UPDATED CODE

I have a table with 2 columns (x and y value) and 100 rows (the x values repeat in a certain interval).

Therfore I would like to perform the following task for changeable table sizes (only changes in the row size!):

I want to determine the amount of repetitions of the x values and save this information as a variable named n. Here the amount of repetition is 5 (each x value occurs 5 times in total).

I want to know the range of the x values from repetition circle and save this information as R = height(range); Here the x range is [0,20]

With the above informaton I would like the create smaller tables where only one repetition of the x values is present

How could I implement this in matlab?

Stay safe and healthy,

Greta

I recently started to refresh my python skills that I have been never really working on since I finished university 16 years ago. In my work life I have never been in contact with the python language. So I would like to embrace this language again. In order to do that I have found some problems that I am currently working on which I would like to finish soon:

Problem 1:

0.) Create a numpy array (6x6, randomly) with whole count numbers ranging from -10 to 10. After that complete the following matrix operations:

My idea:

import numpy as np M = np.random.randint(low=-10, high=10, size=(6, 6)) print(M)

a.) Cut the first row from the matrix

my idea:

first_row = M[0:1] print(first_row)

b.) Double the value of the elements from the 5th row by 2

my idea

5th_row = M[4:5] print(5th_row*2)

c.) Cut all odd columns (the sum of the column) from the 6x6 array

I heard that this can be done in one line. And I have now idea how to get the columns and display them as a matrix with the column_stack command...

d.) Cut a random 3x3 block from the 6x6 array

Again I cant even start with this one...

e.) Set all negative numbers in the 6x6 array to zero

I guess i can use if loops for each element, but i do have no idea how to filter the negative numbers from the positive ones and set the negative numbers zero

f.) Cut all even rows (the sum of the rows) from the 6x6 array

Again here I have big troubles tackling this problem...

Problem 2:

0.) I have a resonance curve as stated here:

A(eta,A_s,D)=A_s/(root[(1-eta²)²+(2etaD)²])

a.) For A_s = 1.0 I want to display a 2d-parametric plot with eta (x-axis) in a range between [0, 3] and the parameter D for [0.0.5,1.0,3.0]

It would be awesome if you could contribute some solutions to the mentioned problems.

best regards

Greta

I learn React and now I tried in various way to get this to work from reading Stackoverflow question and also the html div doc

As the image show the text and link should be in a straight line not vertically stacked

Can someone help me with this or suggest some reading I can do to learn this maybe

This is a web site that I can't inspect with Chrome DevTools. As soon as I open the Devtools the top Header disappear.

Look at the images:

Header visible:

Header gone:

Any idea why?

I am trying to filter only columns with True values from this dataset:

I want, for each team, the rows of the data frame that contains the top three scoring players.

In my head, it is a combination of Dataframe.nlargest() and Dataframe.groupby() but I don't think this is supported. My ideal solution is:

• performed directly on df without having to create other dataframes
• legible, and
• relatively performant (real df shape is 7M rows and 5 col)