Copying an Excel file to a table's dataset

Ignition
21

I successfully test the code in perspective without any error.
So it is only for vision.

23

Huh. I get the same thing. Looks like we canā€™t serialize the dataset. Iā€™ll take a closer look when I get some time to do so.

1 Like
24

Function updated above, hopefully casting values as something other than a cell.

25

The most easy way!

26

Okay, now paste it into a dataset. From perspective.

1 Like
27

Are you[quote=ā€œOscarLucas, post:25, topic:34942, full:trueā€]
The most easy way!

[/quote]

Are you going to give an operator access to SQL?? Not the best idea. Plus this post was about Excel to an Ignition table, not necessarily SQL table.

28

@OscarLucas file->save as csv and we can avoid the rest of the adventure through GUI Land

CREATE TABLE Test (
     ID int
    , Data_Description varchar(50)
)

BULK INSERT Test
FROM '/path/to/file.csv'
WITH
(
    FIELDTERMINATOR = ','
    , ROWTERMINATOR = '\n'
)

Then to stay on topic system.db.runQuery('SELECT * FROM Test') gives us the dataset

Are you going to give an operator access to SQL?? Not the best idea. Plus this post was about Excel to an Ignition table, not necessarily SQL table.

tbf @jshaffer09 asked for "easy", no need to overcomplicate things :grinning:

1 Like
29

Hi Jordan
For cell with formula I try manipulate your code to get the result of the formula.

					if cell != None:
						cellType = cell.getCellType().toString()
						if cellType == 'NUMERIC':
							if DateUtil.isCellDateFormatted(cell):
								value =  cell.dateCellValue
							else:
								value = cell.getNumericCellValue()
								if value == int(value):
									value = int(value)
						elif cellType == 'STRING':
							value = cell.getStringCellValue()
						elif cellType == 'BOOLEAN':
							value = cell.getBooleanCellValue()
						elif cellType == 'BLANK':
							value = None
						elif cellType == 'FORMULA':
							value = cell.getNumericCellValue()
					else:
						value = None

but the problem is I donā€™t know what is the return type of formula is. So the .getNumericCellValue() is not always work if formula return string. Do you know how can I get the type of return value?

30

getCachedFormulaResultType() is what youā€™re looking for.

Script updated.

1 Like
31

For project with every limited budget instead of using report module we can create report templates in excel and save them in server hard drive. When user ask for report we can just simply open the workbook and put the result of query into it and save it as bytes and send the file to client.

32

I talk to my account exec and buy just 1 report. Then I bolt on more as needed. Once 5 are reached, the report count goes unlimited.

1 Like
33

How much does it cost for 1 report?

34

$700 off top of my head, full module is $3.5K again IIRC

35

For ones like Jordan that has solid coding knowledge, the amount of engineering for both method is same. So it is better to save some money here. Specially when you want to compete to Chinese HMI panel.

36

I was getting the error, ā€œTypeError: Unable to convert row x, column y to type class java.lang.Integerā€ on the line ā€œreturn system.dataset.toDataSet(headers, data)ā€, which was traced to

value = cell.getNumericCellValue()
if value == int(value):
value = int(value)

The value it was referring to was a single float within a column of mostly integers

I fixed this error following the logic in "Cannot convert row x column y to type java.lang.Long" by adding

try:
value = float(value)
except:
pass

just before rowOut.append(value). I will update this if I run into problems downstream due to this change.

37

In my project Iā€™m able to use openpyxl for working with excel files. Iā€™m not sure if one of the previous project devs had to do anything weird to set it up but itā€™s really easy to use.
Ignition v7.9.18
openpyxl v1.7.0 (Itā€™s old, but it works)

38

I just tried the openpyxl library and it works in Ignition 8.1.
Version 2.6.4 is the last one to support Python 2.7.
If anyone wants to tryā€¦
openpyxl-2.6.4.zip (1.1 MB)

Just copy everything in the .zip file into the C:\Program Files\Inductive Automation\Ignition\user-lib\pylib folder under Windows.

https://openpyxl.readthedocs.io/en/stable/

5 Likes
39

Heh i had tried openpyxl too a while ago, but i was missing a file of jdcal, when i check your zip tho it seems its in there :o
Maybe i pulled it from git tho instead of that site and forgot to copy that file

Edit: jup seems i pulled it from git

40

Thank you for this very useful snippet of code.
Now, I am using the fileUploader component in Perspective, but it seem to return just the filename, rather than the full path when I use event.file.name to get said path on the OnFileReceived event.

Is it something that I am doing wrong?
Without the full path, I cannot use your code snippet.

Thanks in advance,

41

The full path is deliberately obscured because itā€™s an implementation detail and subject to change if necessary. You need to either read from the byte array directly or copy the file to a known location.