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Questions tagged [dimension]

In physics and mathematics, the dimension of a space or object is informally defined as the minimum number of coordinates needed to specify any point within it. In the dimensional modeling, a dimension is a table in a star schema of a data warehouse. It is collection of reference information about measurable event. Dimensions categorize and describe data facts and measures in way that support meaningful answers to business questions.

Dimension table

A dimension is a table in a Star Schema or Snowflake schema of a data warehouse. It is collection of reference information about measurable event. These events are known as facts and stored in a fact table. Dimensions categorize and describe data warehouse facts and measures in way that support meaningful answers to business questions. They form the core of dimensional modeling.

Dimensions provide the "who, what, where, when, why, and how" context surrounding a business process event. Every dimension table has a single primary(surrogate) key. The primary key is embedded as a foreign key in any associated fact table. Dimension tables are usually wide, flat denormalized for analyzing data.

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How to access the elements of a matrix without lists in this example?

I am quite new at haskell. Our task is to write an algorithm that calculates the dimension of a square matrix. But we are not supposed to use lists. But I dont know how to access to each element of the matrix, which is given like that: matrixA 1 1 =…
Memphis
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concatenate on the third dimension for each subject

I have one file .mat for each condition (4) and each subject (24). So, I have in total 96 files .mat. Example: cond1_sbj5_ToProcess_av.mat, cond1_sbj7_ToProcess_av.mat, cond1_sbj10_ToProcess_av.mat, etc. cond2_sbj5_ToProcess_av.mat,…
dede
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How to get auto generate measurement on object with openCV?

Here is a code where I want to implement the object measurement, but I don't have any idea on what function that I've to use and how to code it and how to make it auto generate. There's anyone can help me? Thank you in advanced. cv::VideoCapture…
user3642026
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Error when getting a dimension in theme for margins

Background I'm trying to set a custom margin value on the listView items based on the selected theme. The app has multiple themes, and the user can choose which theme to use , which I set by calling "setTheme()" . The problem whatever I try, I get…
android developer
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Matlab - ??? Index exceeds matrix dimensions

I have the following code (part of a larger program) in matlab: while(k
Simplicity
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Creating an array in fortran

I am trying to debug a fortran script and I can't figure out why an array is not being defined how it should be. I have parameters parameter(nx0=101,nd0=40,nindex=1) parameter(dep1=0,dep2=200,dep3=5) parameter(del1=0,del2=1000,del3=10) …
zigzs
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Transforming Array Orientation

Can anyone help me transforming an array. It's actually a query result from a MySQL database. Existing: ( [ITEM] => Array ( [0] => PRODUCT A [1] => PRODUCT B [2] => PRODUCT C ) [REFERENCE] =>…
Arief Kurniawan
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Android device width in dp

I have a lack of experience in developing android apps. I've decided to separate up dimensions.xml into 4 configuration qualifiers : default, sw480dp, sw600dp, sw800dp. Where can I see the quantity of android devices that have certain screen width…
brut
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Find matrix dimension so as to contain numbers

Suppose N is the number of elements that I want to store in a matrix. I don't know how much this matrix has to be big. I want to easily find the minimum required size for the matrix so as to make it contain the N numbers. As a requirement, I would…
Eleanore
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A Few Tips on SSAS Cube and Dimension Development

The following are a few tricks I've found to fix reoccurring issues that don't seem to be fixed from any other question or forum.
Ian
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how to declare 10000 x 100000 sized integer matrix in C++

I need to create a matrix which size is 10000x100000. My RAM is 4GB. It works till the 25th iteration (debug), but after 25th iteration I get an error "bad allocation" however only 25% of RAM is used which means the problem is not related with…
Who Cares
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Using the matrix in different dimensions

I have a matrix with the dimension 65536x2 which I want to use with another of dimension 256x256. How can I change the first matrix dimension to be 256x256? I tried reshape as follows: N=reshape(u,256,256); But, got the following error: Error…
Simplicity
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Draw 7- dimentional space

I need to represent vectors in 7- dimensional space. How can I draw them and plot points on them?
AyaZoghby
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Matrix class C#

I'm trying to make some geometric transformations (e.g. scale,shear) on an image already loaded in a bitmap object I then found a Built-in Matrix class in C# , I used it but I'm not sure on how to initialize a 2x2 matrix or a column vector etc.…
Eslam Ahmed
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Crime Data Warehouse

I am a IT student and now facing problem in understanding data warehousing. I need to implement a data warehouse that will be used in State police department for crime analysis. But I am not sure how to do with measure. I will use star schema. I…
Hashi
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