Is there a 'Sampling' equivalent function (that is present in Excel) in Calc?
I would select a random subset of cells from a big set.
Go to Data -> Statistics -> Sampling.
Documentation is at: https://help.libreoffice.org/Calc/Data_Statistics_in_Calc#Sampling
You can use the Analysis ToolPak and Analysis ToolPak VBA add-ins which have a sample method. Here's how you can set it up
you could then use it similar to below, however you may want to record a macro or review the function in object explorer to understand the parameters
[atpvbaen.xls].Sample "Input range", "Output range", "R", "Sample size, e.g. 100"
Related
I have to create selection criteria for an Oracle SQL query based on a snippet from Crystal Reports.
I have no experience with Crystal reports so I have been trying to figure it out searching the web, but seem to be just wasting my time - Could not find anything helpful for this kind of task on the web.
This is the selection criteria that was provided:
{MATL_USED_VW.MAT_ID} = {?Material ID} and
{#Use Date} in {?Previous Use}
//#UseDate = Date({MATERIAL_ACTIVITIES.MA_END})
The column data types are all date columns except for the numeric MAT_ID column
I think this would equate to the following:
where matl_used_vw.mat_id = :Material_id
and use_date in (:previous_use, :usedate)
This is just a swag based on assumptions.
Here's my assumptions on the symbols:
? - probably is a parameter or prompt for input
# - has something to do with formulas
// - is continuation of previous line
{} - encloses an object (text, date number or whatever)
I'm not sure of anything here, it's all just a guess.
If anyone could shed some light on this, I would really appreciate it!
Thanks for the help on this!
Here's the answer in case some other schmuck unfamiliar with Crystal reports needs a similar answer:
# is a Formula. In this case, to convert text to date.
? is a Parameter In this case it represents a range
// is a remark. Same as # or ‘ in other languages.
{} - encloses an object (text, date number or whatever)
How to display all the numbers from a given matrix in Euler Math Toolbox? It doesn't seem to show more than 8 columns at a time, which isn't enough as I frequently need to view more than that.
Output I'm getting as of now:
The documentation says:
Large matrices or vectors might not print in full size. To change this, toggle the behavior with:
largematrices on
largematrices off
or use the operator showlarge.
showlarge random(10,10)
See:
showlarge (Basic Utilities)
The link in the above documentation link directs here:
function prefix showlarge (x$)
Prints large matrices in full.
By default EMT eclipses lines and rows of large matrices. This can be used to see the full matrix. If the parameter is a variable the variable name will be printed.
The default can be changed with largematrices on/off.
x=random(20,5); showlarge(x)
showlarge(random(20,5))
See:
largematrices (Euler Core),
show (Maxima Documentation)
I transformed my stat data with logarithm, square root,... but my dependent variable doesn't achieve normality distribution yet.
Then, I know that the Box-Cox transformation permit us to find out the best transformation approach in order to achieve normality distribution and therefore apply parametric test such as ANOVA.
Can anybody help me in how I can perform this Box-Cox transformation in SPSS software? It is possible to apply through its syntax?
There is a Box Cox transformation syntax on Raynald's SPSS tools website. The data are just to give an example.
I added some simple syntax to easily see the results.
* Box-Cox transformation for all 31 values of lambda between -2 to 1
(increments of .1).
* Raynald Levesque 2003/11/08.
* http://www.spsstools.net/en/syntax/syntax-index/compute/box-cox-transformation/
GET FILE="C:\{SPSS user folder}\Employee data.sav".
COMPUTE var1=salary./* salary is a skewed test variable.
VECTOR lam(31) /xl(31).
LOOP idx=1 TO 31.
COMPUTE lam(idx)=-2.1 + idx * .1.
DO IF lam(idx)=0.
COMPUTE xl(idx)=LN(var1).
ELSE.
COMPUTE xl(idx)=(var1**lam(idx) - 1)/lam(idx).
END IF.
END LOOP.
* visual examination of results.
EXAMINE
VARIABLES= salary xl1 to xl31
/PLOT=NPPLOT
/stat descrip.
* numerical examination of results.
FREQUENCIES
/VARIABLES= salary, xl1 to xl31
/FORMAT= NOTABLE
/STATISTICS=SKEWNESS KURTOSIS.
The numerical examination works best after having copied the results in a spreadsheet.
This worked for me: "Go to Transform – Prepare Data for Modelling Automatic from the drop down list. In the Fields tab you can specify which variables to transform by moving them to the Inputs box. In the Settings tab click on Rescale Fields. Tick the box before ‘Rescale a continuous target with a Box-Cox transformation to reduce skew’. Click Run. This will create a new column with the transformed variable."
From: https://www.researchgate.net/post/How_can_I_do_Box-Cox_transformations_in_SPSS
You might want to double check with another source.
Using Actuate eReport Designer Professional 9 SErvice Pack 3 Fix 2
I am attempting to set a text control's ValueExp property to display a string consisting of a division result concatenated with some static text. I want the division result to display as an integer if there is no remainder. Otherwise, I want only 1 decimal place.
There will be conditional logic involved, but I will be able to handle that. What I am really looking for is, using the Expression Builder only, can I format numbers. For example, how would I get the expression, 5/3 & " text" to display 1.7 text? This guess,
round(5/3, 1) & " text"
threw errors for "illegal variable use (round)" and "operator not found for these types"
From Dominique's answer, this effort:
BirtMath.round(5/3, 1)
resulted in an illegal variable use on BirtMath.
Try this:
BirtMath.round(5/3, 1) + " text"
(tested on BIRT Eclipse designer, this should be the same with actuate professional designer)
What finally got the job done was:
Format(5/3, "##.#") & " text"
Dominique's answer refers to BIRT, which is a completely different technology/product.
If you want to display a numeric value with special formatting, a Text Control is not the best choice here. Instead, you should use a numeric control of the appropriate type (for example, a Double Control) and either override the GetText() method of that control to handle the display formatting or use Conditional Formatting. The reason this is a better solution is that data search and export will not work properly with a Text Control.
Note that you can use a format pattern like this: "#,##0 \T\e\x\t" instead of concatenating the string; this technique is needed when you are using Conditional Formatting.
Personally, I would prefer you to use Conditional Formatting, because I put a lot of effort into designing that feature of e.Reports, and I'd like to see more people using it. :) But overriding GetText() is probably easier in your specific situation, due to the need to do more complex string manipulation to eliminate the trailing decimals.
I want to add that with BIRT, you can also format the text in a more 'graphic' way, without the need for SQL ... in case it is useful to someone ...
Select the Object - Properties - Format Number - You choose the Format
there is variety for each case and in addition to adding the custom format.
Of course, it is everyone's decision to how format the text, and it is always good to know how it is done in different ways!
Using gnumeric, how do I sum the positive values in a range, without
creating a new column?
I'm thinking something along the lines of:
SUM(B21:B25, #>0&)
or
SUM(SELECT(B21:B25, #>0&))
"#>0&" is Mathematica-ese for a function returning true if its
argument is greater than 0, false otherwise.
More generically: how do I apply an aggregate function to cells in a
range that meet a specific condition?
Try using the SUMIF function:
=SUMIF(B21:B25, ">0")
The gnumeric documentation linked above doesn't contain very much detail on the usage of the SUMIF function. The documentation claims that it is Excel compatible, so you may have some luck reading the documentation for Excel's SUMIF function if you want any more information.