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Questions tagged [data-representation]

177 questions
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4 answers

What is the name of a data structure looking like bowling pins?

First of all, sorry for the title. Someone please propose a better one, I really didn't know how to express my question properly. Basically, I'm just looking for the name of a data structure where the elements look like this (ignore the…
Jesse Emond
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Creating a 'thermal image' using data points

I am looking for a way to represent some data points into a 'thermal map' (500x500). Data array: "data": [ { "x": 120, "y": 350, "temperature": 90 }, { "x": 300, "y": 210, "temperature": 35 …
Laurent
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Efficient data interchange format using only C-style fprintf() statements?

I need to transfer the very large dataset (between 1-10 mil records, possibly much more) from a domain-specific language (whose sole output mechanism is a C-style fprintf statement) to Python. Currently, I'm using the DSL's fprintf to write records…
Gilead
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6 answers

How to represent data that may not be set

I have a class containing a number of properties, something like: public class Update { public int Quantity { get; set; } public decimal Price { get; set; } public string Name { get; set; } } Each instance of Update does not necessarily…
RichK
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Is transmuting (T, ()) to T safe?

I am implementing an alternative to a BTreeMap. On top of this I'm building a BTreeSet, which is a wrapper around type MyBTreeSetContents = MyBTreeMap. Internally, leaf nodes of this BTree contain a Vec<(K, V)> of values. In the case…
Qqwy
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What's the need for different ways to represent data using the binary system?

There are many ways to represent data using binary like - unsigned, signed magnitude, 1s/2s complement, offset-M, floating-point, ASCII, and Unicode. Why do we need so many different ways?
sunny
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Parallelize matplotlib.animation when running .to_html5_video()

I was wondering whether there is a straight-forward way to parallelize the method animation.FuncAnimation.to_html5_video() which takes a lot of time. While running it only uses 1 of my cpu's cores at a given time and I am guessing the process should…
shnnnms
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Little Endian vs. Big Endian architectures

I've a question it is a kind of disagreement with a university professor, about Endianness, So I did not find any mean to solve this and find the right answer but asking and open a discussion in Stack Overflow community. Let's say that we have this…
Omar Ghannou
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1 answer

How to plot the distribution of two variable(meter & height) for two different scenario?

I have two data frames which represent two scenarios. Each dataframe have 3 variables: Area, Height and Scenario_Name(scenario 1 and scenario 2). What I want: I want to show how much Suitable_Area do I have at each Height for the two scenario. I…
m_rub
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Confusion about data types, compilers, hardware data representation and static vs dynamic typing

I am trying to understand static vs dynamic typing, but am really struggling to see how everything fits together. It all starts with data types. As far as I understand, data types are quite abstract notions, which exist 'in' compilers in order to…
Lord Cat
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Polymorphic Data Translation/Conversion Design Pattern

The problem is as follows: consider the following class class data : public base_data { public: int a; std::string b; double c; ... // many other members }; Assume it makes perfect sense to expose the data members of this…
Omri Bashari
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What is the maximum and minimum values can be represented with 5-digit number? in 2's complement representation

What is the maximum and minimum values can be represented with 5-digit number that is assuming 2's complement representation? do I find the the min and maximum value of 5-digit numbers, which are 00000 and I'm not sure what the max is. Then convert…
me sung
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Numerically representing Nominal Data whilst retaining data semantics

I have a dataset of nominal and numerical features. I want to be able to represent this dataset entirely numerically if possible. Ideally I would be able to do this for an n-ary nominal feature. I realize that in the binary case, one could represent…
Jack H
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Algorithm to write two's complement integer in memory portably

Say I have the following: int32 a = ...; // value of variable irrelevant; can be negative unsigned char *buf = malloc(4); /* assuming octet bytes, this is just big enough to hold an int32 */ Is there an efficient and…
Ricky Stewart
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How can I deal with multiple values in some attribute?

I'm using WEKA tool for clustering data analysis, however in some of my attributes, there are many values within the domain. Specifically, I need to represent some information about proteins and the information that I need to include is the terms…
Marcos Abraão
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