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Mastering Development

Is there a way to create new columns in R based on manipulations from multiple data frames?

Does anyone know if it is possible to use a variable in one dataframe (in my case the “deploy” dataframe) to create a variable in another dataframe? For example, I have two dataframes: df1: deploy <- data.frame(ID = c(“20180101_HH1_1_1”, “20180101_HH1_1_2”, “20180101_HH1_1_3”), Site_Depth = c(42, 93, 40), Num_Depth_Bins_Required = c(5, 100, 4), Percent_Column_in_each_bin = c(20, 10, […]

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Mastering Development

SQL query optimization using dynamic query

I have the following stored procedure. It uses a common table expression and a table valued function. It takes 600 ms to execute this sp. I used dynamic query to avoid the use of a table valued function and the the execution time reduced to around 300 ms. Is it possible to further tune this […]

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Mastering Development

In python, I get an error when i end the if statement with a concluding else statement

I tried similar posts but not a solid explanation or probably cos the question wasn’t asked properly. I was able to find my way out of the python expression that made me write this post but actually I’m left puzzled and a more detailed explanation would go a long way and help me sleep better […]

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CMS Development Magento

“Could not receive Stock Item data” Line Appear Instead of Admin Product Grid – Magento 2

“Could not receive Stock Item data” line appear instead of product grid in admin side. I have recently imported other db to my Cloud local setup. When I am doing indexing,I am getting error like this. SQLSTATE[HY000]: General error: 1449 The user specified as a definer (”@’%’) do es not exist, query was: DELETE price_index […]

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Mastering Development

Split the array into two to find the best solution in getting equal or nearly equal sum of integers

I need to solve a problem in which I need to split arrays into two sub-arrays such that the sum of their weights will be equal or “nearly equal”. Explanation If I have an array [1,2,3,4,5] so I can possibly make two subsets of [1,2,4] = 7 and [3,5] = 8 OR [2,5] = 7 […]

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Ask Mathematics

How to obtain the common numbers between this 2 sequences?

Any odd number can be written as: $$ n = \left(\frac{n + 1}{2}\right)^2 – \left(\frac{n – 1}{2}\right)^2 $$ If I take: $$ a^2=\left(\frac{n + 1}{2}\right)^2 $$ and: $$ b^2=\left(\frac{n – 1}{2}\right)^2 $$ If I subtract $1$ from $a$ or $b$, then $3$ to the previous, then $5$ and so on, I will always obtain $n$ […]

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Development

Two-Way Repeated Measures ANOVA: Error in lm.fit()… 0 non-na cases (rstatix)

I am trying to run a Two-Way Repeated Measures ANOVA using the R Statix package based on the description from here however I am running into the subject error with my dataset. The data consist of 10 replicate biomass measurements recorded at each of 8 Locations across 5 months (10 reps x 8 locations x […]

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Development

Trying to insert or delete columns

I am getting: Run-time error ‘1004’ subtotal method of Range class failed I recorded a macro (and manually added a few codes) to copy data, sort it, subtotal it, and to format some of the subtotal lines. The macro works fine when adding rows to the raw data sheet (“StaffingProjected”), but I cannot insert or […]

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Development

Multiply List of RGB values Python

I’m trying to multiply a list of RGB Values, more specifically multiply each element with a different variable e.g. colors = [(70, 76, 75), (97, 107, 93)] multipliers = [2,3] prod = lambda a,b: [a[i]*b[i] for i in range(len(a))] newcolors = (prod (colors, multipliers)) Desired Output: [(70,76,75), (70,76,75), (97, 107, 93), (97, 107, 93), (97, […]

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Development

Close button not showing on each image angular 8

I have tried to display close button on a list of images. Close button only shows in last image. Please see below my codes. Html file <div class=”image-preview mb-5″> <div *ngFor=”let url of images;let index = index” class=”img-container”> <img class=”column” [src]=”url” height=”90px” width=”90px” (click)=”selectedImage(index)” [ngClass]=”{‘selected-image’: selectedIndex === index}”> <button type=”button” class=”close” aria-label=”Close” (click)=”removeImage(index)”> <span aria-hidden=”true”>&times;</span> […]