Documentation Help Center. C is in sorted order. If A is a table or timetable, then unique returns the unique rows in A in sorted order. For timetables, unique takes row times and row values into account when determining whether rows are unique, and sorts the output timetable C by row times.

You must specify A and optionally can specify setOrder or occurrence. The 'legacy' option does not support categorical arrays, datetime arrays, duration arrays, calendarDuration arrays, tables, or timetables. Find the unique rows of A. Find the table rows with unique values in the first variable Age. If you only want one table variable to contain unique values, you can use the indices returned by unique to extract those rows from the table.

Find the unique rows of A based on the data in the first two columns. Specify three outputs to return the index vectors ia and ic. Use ia to index into A and retrieve the rows that have unique combinations of elements in the first two columns.

Find the unique elements in a vector and then use accumarray to count the number of times each unique element appears. Find the unique elements in the vector. Return the index vectors ia and ic. Count the number of times each element in C appears in a.

Specify ic as the first input to accumarray and 1 as the second input so that the function counts repeated subscripts in ic. Summarize the results. Use the setOrder argument to specify the ordering of the values in C.

unique values array

Specify 'stable' if you want the values in C to have the same order as in A. Create a vector x. Obtain a second vector y by transforming and untransforming x. This transformation introduces round-off differences in y. Verify that x and y are not identical by taking the difference. Use unique to find the unique elements in the concatenated vector [x;y]. The unique function performs exact comparisons and determines that some values in x are not exactly equal to values in y.

These are the same elements that have a nonzero difference in x-y. Thus, c contains values that appear to be duplicates.

Use uniquetol to perform the comparison using a small tolerance.

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Create a cell array of character vectors, Awhere some of the vectors have trailing white space. Use the 'legacy' flag to preserve the behavior of unique from Rb and prior releases in your code. If A is a table, then unique does not take row names into account. Two rows that have the same values, but different names, are considered equal. If A is a timetable, then unique takes row times into account. Two rows that have the same values, but different times, are not considered equal.

The object class methods must be consistent with each other. These objects include heterogeneous arrays derived from the same root class. For example, A can be an array of handles to graphics objects. Order flag, specified as 'sorted' or 'stable'indicates the order of the values or rows in C.Returns the sorted unique elements of an array. There are three optional outputs in addition to the unique elements:.

Input array. Unless axis is specified, this will be flattened if it is not already 1-D. If True, also return the indices of ar along the specified axis, if provided, or in the flattened array that result in the unique array. If True, also return the indices of the unique array for the specified axis, if provided that can be used to reconstruct ar.

If True, also return the number of times each unique item appears in ar. The axis to operate on. If None, ar will be flattened. If an integer, the subarrays indexed by the given axis will be flattened and treated as the elements of a 1-D array with the dimension of the given axis, see the notes for more details. Object arrays or structured arrays that contain objects are not supported if the axis kwarg is used.

The default is None. The indices of the first occurrences of the unique values in the original array. The indices to reconstruct the original array from the unique array. The number of times each of the unique values comes up in the original array. When an axis is specified the subarrays indexed by the axis are sorted. This is done by making the specified axis the first dimension of the array and then flattening the subarrays in C order.

The flattened subarrays are then viewed as a structured type with each element given a label, with the effect that we end up with a 1-D array of structured types that can be treated in the same way as any other 1-D array. The result is that the flattened subarrays are sorted in lexicographic order starting with the first element. New in version 1. See also numpy. Previous topic numpy. Last updated on Jul 26, Created using Sphinx 1.You will also learn how to quickly get a distinct list using Excel's Advanced Filter, and how to extract unique rows with Duplicate Remover.

In a couple of recent articles, we discussed different methods to count and find unique values in Excel. If you had a chance to read those tutorials, you already know how to get a unique or distinct list by identifying, filtering, and copying.

UNIQUE function

But that's a bit long, and by far not the only, way to extract unique values in Excel. You can do it much faster by using a special formula, and in a moment I will show you this and a couple of other techniques. Unique values are the values that exist in a list only once. For example:. In this example, we are extracting unique names from column A more precisely from range A2:A20and the following screenshot demonstrates the array formula in action:.

unique values array

The detailed explanation of the formula's logic is provided in a separate sectionand here's how to use the formula to extract unique values in your Excel worksheets:. As you may have already guessed from the heading of this section, distinct values in Excel are all different values in a list, i.

If your source list contains any blank cells, the distinct formula we've just discussed would return a zero for each empty row, which might be a problem.

To fix this, improve the formula a bit further:. In a similar manner, you can get a list of distinct values excluding empty cells and cells with numbers :. As a quick reminder, in the above formulas, A2:A10 is the source list, and B1 is cell right above the first cell of the distinct list.

Extract unique items from a list

The following screenshot shows the result of both formulas:. When working with case-sensitive data such as passwords, user names or file names, you may need to get a list of case-sensitive distinct values. For this, use the following array formula, where A2:A10 is the source list, and B1 is the cell above the first cell of the distinct list:.

This section is written especially for those curious and thoughtful Excel users who not only want to know the formula but fully understand its nuts and bolts. It goes without saying that the formulas to extract unique and distinct values in Excel are neither trivial nor straightforward. For our in-depth analysis, let's use the array formula that extracts a list of distinct values because all other formulas discussed in this tutorial are improvements or variations of this basic one:.

If the value is found, the formula returns 1, otherwise - 0. As already mentioned, the other formulas discussed in this tutorial are based on the same logic, with just a few modifications:.

To better understand and reverse engineer the formulas, feel free to download the sample Unique and Distinct Values workbook. If you don't want to waste time on figuring out the arcane twists of the distinct value formulasyou can quickly get a list of distinct values by using the Advanced Filter.

The detailed steps follow below. Finally, click the OK button and check the result: Please pay attention that although the Advanced Filter's option is named " Unique records only ", it extracts distinct valuesi. In the final part of this tutorial, let me show you our own solution to find and extract distinct and unique values in Excel sheets.

This solution combines the versatility of Excel formulas and simplicity of the advanced filter. In addition, it provides a couple of unique features such as:.

And now, let's see the Duplicate Remover tool in action. Supposing you have a summary table created by consolidating data from several other tables. Obviously, that summary table contains a lot of duplicate rows and your task is to extract unique rows that appear in the table only once, or distinct rows including unique and 1 st duplicate occurrences. Either way, with the Duplicate Remover add-in the job is done in 5 quick steps. The Duplicate Remover wizard will run and select the entire table.

So, just click Next to proceed to the next step. Because we are extracting unique rows, select Copy to another locationand then specify where exactly you want to copy them - active sheet select the Custom location option, and specify the top cell of the destination rangenew worksheet or new workbook.

In this example, let's opt for the new sheet: Click the Finish button, and you are done!Keep in touch and stay productive with Teams and Officeeven when you're working remotely.

It will be available to Office subscribers in the Semi-Annual channel starting in July For more information on how features are rolled out to Office subscribers, see When do I get the newest features in for Office TRUE will compare columns against each other and return the unique columns. This is the database concept of unique. TRUE will return all distinct rows or columns that occur exactly once from the range or array.

FALSE or omitted will return all distinct rows or columns from the range or array. An array can be thought of as a row or column of values, or a combination of rows and columns of values.

If your supporting data is in an Excel Tablethen the array will automatically resize as you add or remove data from your array range if you're using Structured References. For more details, see this article on Spilled Array Behavior. Excel has limited support for dynamic arrays between workbooks, and this scenario is only supported when both workbooks are open.

If you close the source workbook, any linked dynamic array formulas will return a REF! Example 1. Example 2. This can be useful if you want to identify people who have not returned for additional service, so you can contact them. Example 3. Note that the formula references the entire range of names in A2:A12 and B2:B This allows Excel to return an array of all names. If you format the range of names as an Excel tablethen the formula will automatically update when you add or remove names.

Example 4. This example compares two columns and returns only the unique values between them.

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You can always ask an expert in the Excel Tech Communityget support in the Answers communityor suggest a new feature or improvement on Excel User Voice.

SORT function. Dynamic arrays and spilled array behavior. Implicit intersection operator:. Learn more. Return unique values from a list of values. Return unique names from a list of names. Expand your Office skills. Get instant Excel help. Was this information helpful? Yes No. Any other feedback? How can we improve? Send No thanks.

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Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents. Contact Support. TRUE will return all distinct rows or columns that occur exactly once from the range or array FALSE or omitted will return all distinct rows or columns from the range or array.The result is a dynamic array of values.

If this array is the final result i. Values can be sorted by one or more columns. SORT returns a dynamic array of results. The size or the array is is specified by rows and columns arguments. Generated values can be either decimals or whole numbers. The array can be one dimensional, or two-dimensional.

Start and step values are arguments. Formulas are the key to getting things done in Excel. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access.

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Skip to main content. Values can be text, numbers, dates, times, etc. Return value. Usage notes. Extract common values from two lists. Unique values with criteria. Unique values by count. Unique values. How this formula Unique values ignore blanks. Distinct values.It also looks at some more features of the dictionary object. It was prompted by a discussion at the LinkedIn private Excel Blackbelts forum. A spreadsheet with the examples shown below, and full open source code, may be downloaded from: GetUnique.

The Unique User Defined Function UDF shown below returns a single column array containing all the unique values numbers or text in DRange, which is defined as a Variant so that it will accept a spreadsheet range or an array from another VBA routine. The result is an array with one copy of each unique value from DRange. Details of adding a reference to the Scripting Library are given in the previous post.

UDF options and instructions for entering array functions. On StackOverflow something similar to this was done. I always thought that built in Excel functions would work faster, even in VBA, not the case using the dictionary function is amazingly fast!

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Your rendition is much more clean cut than what was done on StackOverflow. Like Like. I use them for classes too, since they are supposedly faster than collections, unless you need to provide order like inserting than they seem to be the way to go.

In Excel this can be done by pressing sequentially Alt-D-P… Step1: Click Multiple Consolidation Ranges Step2a: I will create the page fields Step2b: Select the range ac33 [including blank row and col headings] Step3: Existing Worksheet: M22 In the pivottable list, uncheck row and column and drag Value to the row label position. Kirk — you are nearly there. You can either select the whole output range first, and enter the function with Ctrl-Shift-Enter, or enter the function in the top left cell, then select the whole output range including the cell with the functionpress F2 to enter edit-mode, then press Ctrl-Shift-Enter.

I know this web page presents quality based articles or reviews and extra stuff, is there any other site which gives such stuff in quality? Item it. Value Next. Nothing has been added to the dictionary but a new key has been made.

unique values array

However I have been trying to use the formula on a large array rows containing long texts. Is there any limitations as to the number of characters per cell or as to the range containing the values to be filtered?

One thing that may be causing the problem is the worksheetfunction.

unique values array

You might try replacing that with a loop and see if that solves the problem. You are commenting using your WordPress.

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Formula to get unique Value

You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. This site uses Akismet to reduce spam. Learn how your comment data is processed. Newton Excel Bach, not just an Excel Blog. An Excel blog for engineers and scientists, and an engineering and science blog for Excel users. Skip to content. Transpose Dict. Like this: Like LoadingIn the example shown, the formula in D5, copied down, is:. An expanding reference is a bsolute on one side, relative on the other.

So, we start on the row above. At each new row, we have a different array like this:. Now we have the arrays we need to find positions row numbers.

To extract a list of unique items that appear just once in the source data, you can use a formula like this:. The Excel LOOKUP function performs an approximate match lookup in a one-column or one-row range, and returns the corresponding value from another one-column or one-row range.

Formulas are the key to getting things done in Excel. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. Skip to main content.

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Extract unique items from a list. Generic formula. Related formulas. Get value of last non-empty cell. To find the value of the last non-empty cell in a row or column, you can use the LOOKUP function in this surprisingly compact formula. As an additional bonus, this formula is not an array formula, and not volatile. How this formula works The key to To lookup the latest price for a product in a list, sorted so latest items appear last, you can use a formula based on the LOOKUP function.

Sort and extract unique values. To dynamically sort and extract unique values from a list of data, you can use an array formula to establish a rank in a helper columnthen use a specially constructed INDEX and MATCH formula to extract unique values.

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In the example shown, the Related functions. Good links. Excel Formula Training Formulas are the key to getting things done in Excel. You must have JavaScript enabled to use this form. Just wanted to drop you a short e-mail to say how useful I have found several of you video tutorials. Thank you! I really found the "Choose" function video especially useful in applying financial quarters UK!

Excel video training Quick, clean, and to the point.