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Mastering Development

How to store and interpolate multidimensional, varibale size arrays in Modelica?

I have large size tables (A1, A2, …) with at least 3 dimensions (say b, c, d) which can be represented as shown in the image, where array size n_b, n_c and n_d are variable. package Arrays record A extends Modelica.Icons.Record; parameter Real b[:] “base array”; parameter Arrays.Baseclasses.B b_target[:] “target array”; end A; package Baseclasses […]

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Mastering Development

Average of column values based on intervals of a second column

I have a dataset that has two columns, column 1 is the time which goes from 1 to 9 seconds and column 2 is the probability of an event in a specific second with values of 30, 69, 56, 70, 90, 59, 87, 10, 20. I am trying to get the average probability in a […]

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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

Add multiple arrays in Python

What I have created so far I have created an 18×18 square matrix of zeros called ‘master_matrix’. I have created an array called ingreso_datos, whose column 0 [col 0] indicates the data label. I have created a for loop where: For each data label I will have a little_matrix whose values will be assigned to […]

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Mastering Development

Excel VBA How will i make my Loop function properly?

Good evening lads, Short: I have a workbook that has checkboxes and a pivottable upon refreshing the data stored will be transferred to another sheet. additionally when the checkbox is checked it will get a status True and will also be updated. Upon refreshing the pivottable the “article” is then cleared from the Pivot table. […]

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Mastering Development

multiplying certain elements of an array javascript

var valid1=[4, 5, 3, 9, 6, 7, 7, 9, 0, 8, 0, 1, 6, 8, 0, 8] function validateCred(array) { let doubleArray =0 for(i=array.length-2; i >= 0; i-=2) { doubleArray= array[i]*2 } console.log(doubleArray); } validateCred(valid1) //prints 8 I want it to print entire loop Im trying to code luhn Algorithm and this is the first […]

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Ask Mathematics

Combining combinatoric sequences?

Consider “combinatoric sequences” as being infinite sequences of naturals typically generated by counting all of (or a class of) each size of a discrete type of mathematical object. Common examples include graphs, families of graphs, arrangements/choices, and polyforms. A simple example is the number of free polyominoes for the number of there constituent blocks. 1, […]

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Ask Mathematics

Is the sequence infinite, finite, is there a general formula to determine n th term?

Sequence of numbers whose factorial on prime factorisation contains prime powers of prime numbers, whose power is greater than 1 or contains multiplicity of one for all prime numbers less than equal to number. Sequence: 1,2, 3, 4, 5, 8, 14,.. If k(prime) is to be checked for its presence in sequence then if k-1 […]

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Mastering Development

Normalise a dataframe in R

I have a dataframe named examples with some semantic features occurences: > str(examples) Classes ‘spec_tbl_df’, ‘tbl_df’, ‘tbl’ and ‘data.frame’: 50 obs. of 12 variables: $ filename : chr “Text01” “Text02” “Text03” “Text04” … $ Control : num 1 3 0 0 0 6 0 1 0 1 … $ Economic : num 1 3 0 […]

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Mastering Development

sqlite3.OperationalError: near “.27”: syntax error

Recently, I’m trying to make some database. (I’m new to programming) When I’m trying to run following code, I’m receiving this error: sqlite3.OperationalError: near “.27”: syntax error def file_write(self, name, value): con = sqlite3.connect(“c:/Users/DB.db”) cursor = con.cursor() cursor.execute(“CREATE TABLE {} (Date text, Value1 int, Value2 int, Value3 int, Value4 int, Value5 int, Value6 float, Value7 […]