时间：2019-03-07 标签：c#cube/multiDimensionalDataset

发布于 2024-08-23 17:57:41 字数 287 浏览 9 评论 0原文

我正在解决一个问题，我需要使用 C# 处理内存中的多维数据。我的需求类似于 OLAP 多维数据集，但没有那么复杂。例如，我不需要计算或聚合或类似的东西。我基本上想使用多维键引用数据。例如：

var key = new Key();
key["Dim1"] = "DimValue1";
key["Dim2"] = "DimValue2";
key["Time"] = 1999;
DataSet[key] = 4.43434m;

它允许我迭代数据集的值或切片。你在 C# 中遇到过这样的库吗？

原文

I'm working on a problem where i need to process multi dimensional data in memory using C#. My requirement resemble OLAP cubes but are not as complex. for example i don't need calculations or aggregation or stuff like that. I basically would like to reference data using multidimensional keys. for example:

var key = new Key();
key["Dim1"] = "DimValue1";
key["Dim2"] = "DimValue2";
key["Time"] = 1999;
DataSet[key] = 4.43434m;

And it would allow me to iterate on the values or slices of the dataset. Have you come across such a library in C#?

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像你 2024-08-30 17:57:41

这可能无法满足您的需求，但我发现处理多键数据集的一种简单方法是创建一个包含所有“键”字段和“值”键（根据您需要的数量）的对象，并且然后为每个键创建查找表达式。

例如：

class MyData
{
    // Your keys
    public string Dim1;
    public string Dim2;
    public string Time;

    // Your values
    public string Value;
}

将被“索引”并像这样检索：

// add all your data to a list or collection
var data = new List<MyData>();

// this provides the entry point to our dataset
var lookupDim1 = data.ToLookup(d => d.Dim1);
var lookupDim2 = data.ToLookup(d => d.Dim2);
var lookupTime = data.ToLookup(d => d.Time);

// sample retrievals
IEnumerable<MyData> sampleData1 = lookupDim1["DimValue1"];
var sampleData2 = lookupDim2["DimValue2"].Intersect( lookupTime["1999"] );

This may not meet your need, but I've found a simple way to deal with multi-key datasets is to create an object which contains all your 'key' fields and 'value' keys (as many of each as you need) and then create Lookup expressions for each of your keys.

For example:

class MyData
{
    // Your keys
    public string Dim1;
    public string Dim2;
    public string Time;

    // Your values
    public string Value;
}

would be 'indexed' and retrieved like this:

// add all your data to a list or collection
var data = new List<MyData>();

// this provides the entry point to our dataset
var lookupDim1 = data.ToLookup(d => d.Dim1);
var lookupDim2 = data.ToLookup(d => d.Dim2);
var lookupTime = data.ToLookup(d => d.Time);

// sample retrievals
IEnumerable<MyData> sampleData1 = lookupDim1["DimValue1"];
var sampleData2 = lookupDim2["DimValue2"].Intersect( lookupTime["1999"] );

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