Updating the particular row and column in a JTable

Hi,
I have a JTable which is having fixed number of columns. When i am trying to update a particular cell in the table
during programm execution i am not able to do it.
I am getting the row number and column number correctly. But when i am going to set the data it is not setting at the same row. It is setting some other row according to the m_index (according to the sorting).
i am doing :
JTableModel model = (JTableModel) m_TablePan.getTableModel();
model.setValueAt(savedData, row, column);

See the convertXxxIndexToView and convertXxxIndexToModel methods.
db
Edited by: Darryl.Burke -- wrong methods suggested
Edit2: Evidently lipumama doesn't follow up on many questions posted.
One for the blacklist.

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Attachments:
Untitled.vi ‏26 KB

I have fixed a number of things in your vi.
You were right in thinking that the array was continuously re-initialized. To avoid this, use a shift register (right-click the loop border), which will pass the updated array into the next iteration.
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
your_vi.vi.zip ‏13 KB

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Is it possible to switch the rows and columns?

Is it possible to switch the rows and columns of a table? The reason I ask is that it would be easier for me to input the data with the number at the top of a column and the fields going down. But it would be easier to read the data with the number on the left and the fields going to the right. Is it possible to switch a table in this way?

mahongue wrote:
Is it possible to switch the rows and columns of a table? The reason I ask is
that it would be easier for me to input the data with the number at the top
of a column and the fields going down. But it would be easier to read the
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Table 1
 A B C
========
1 o p q
2 r s t
3 u v w
Table 2
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========
1 o r u
2 p s v
3 q t w
You are right - it would be nice to have a menu item to magically transpose a selected block of cells. But there isn't one. So...
One way to solve this is to use the index() and transpose() functions to accomplish row and column cell transposition. If you are going to use a 1:1 cell correspondence and change the header columns and rows also, you can use this:
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Cautions:
o The target table must match the swapped cell length and width dimension. For example, if the original data range is 6 columns wide by 4 rows deep, then the corresponding table or range to hold the transposition must be 4 columns wide by 6 rows deep.
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Hi, how can i break the value for a row and column once i have converted the image to the array???????

Hi, I would like to know how can i break the value for a row and column once i have converted the image to the array. I wanted to make some modification on the element of the array at a certain position. how can i do that?
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Thanks for your reply.Sorry for the confusion.
I manage to change the array element by changing the row and column value. But, what i want is to allow the program to change the array element at a specified row and column value, where the new value is generated automatically by the program.
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Attachments:
arrayrowncolumn2.JPG ‏64 KB

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I have a Windows server app that generates Excel workbooks to be emailed to political campaign volunteers to be loaded into Numbers on an iPad, edited, then emailed back to be posted to the server database. There are two problems encountered:
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2. The Excel workbook has pop-up "tool-tip" type comments in certain column headings in order to provide the user with the acceptable entries for those columns, but Numbers does not respect those. When the user touches any of the commented column heading cells, a context menu appears instead of the comment.
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I imported a Numbers '09 file into Numbers on the iPad. All comments were removed during import. Frozen header row and column were retained.
Thank you for your responses I must ask, however, when you refer to "importing" the Excel file, are you referring to a two step process whereby the Excel file is first converted by some other process into Numbers format, then opened in the Numbers application - which is what I have to do in my PC application to generate the Excel file, and reverse that process to convert the Excel back into my database format - or are you simply referring to opening the file in Numbers as "importing" it? And please excuse any ignorance, as I'm not at all familiar with Apple's terminologies. In fact, I don't own an iPad myself, but rather I have to depend on one of my clients to do the testing for me.
I imported an XLSX file into Numbers on the iPad. The file used "freeze panes" to "freeze" the first column and row. Only warning on import was that it changed fonts. It imported without the first row and column frozen and with no comments. Nothing I can do about the missing comments but it was a simple matter to turn the first column & row into headers and freeze them.
Unfortunately this would not be an efficient solution, since the end users are, for the most part, elderly political campaign volunteers who are fairly computer illiterate. These workbooks are actually canvassing lists - known as walklists. Their purpose is for the volunteers to interview voters, record the results of the interviews, and post the results to a database, which provides the campaigns with valuable strategizing capabilities. Also, these workbooks have multiple pages - as many as 10 or more. and from what I infer from the above, the setting changes would have to be made on each page.
My whole intent in developing this iPad/Tablet methodology was to significantly reduce volunteer's work - which is a recruitment benefit - and eliminate paper. While the latter would be accomplished, the former would not, and in fact would tend to increase it. It's necessary to keep the first row - column headings - and the first column - the route identifier - from scrolling off the page, so that the volunteer won't have to keep scrolling up and down and right and left to know what the data are.
Conclusion: Comments are not supported on the iPad version of Numbers. Frozen headers are not imported from Excel but can be recreated easily.
I was previously directed to the Apple website http://www.apple.com/ipad/from-the-app-store/apps-by-apple/numbers.html which extols the wonders of the Numbers application. About halfway down the page there's a section regarding, "Sliders steppers and pop-ups". The web page states that pop-ups can be set up but, being a marketing site, gives no indication whatsoever as to how it's done. I was hoping someone could tell my if there's any way to carry them over from an Excel file.

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This issue was raised in the Java Programming forum. Received initially as a weird requirement, it now seems that it is more common than you might think. Under it's original title it was "JTable - Limitation or Not?"
I introduced the topic here so that the thread perspective can include more experienced Swing developers.
The JTable in it's default layout is intended to hold database tables with records in rows. But what if you want records in columns?
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I would have a guess that this is an established component in many private Java libraries already.
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In the descriptions below a distinction is made between the normal internal data model representation of a row, called "mrow", and the displayed form "row".
Only the TableModel need be changed.
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The power of Swing!
Many thanks to all.

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it may also worth cross checking below form doc:
a.If your row and column template contains formulas with external references (for
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Assigning Header Row and Column

I've imported a couple of very large spreadsheets from Excel. Can I assign the first row and columns as headers or do I need to click on the "Add top row for column names" or the corresponding row names button and then cut and paste my existing first row and column?

I'm surprised.
I worked heavily on a sheet in which I uses several formula entered in the header cells, it works flawlessly under 10.5.5 as well as under 10.4.11.
How have you updated Mac OS to 10.5.5?
Did you used the "Software Updater" available in the Apple menu or did you downloaded a combo updater?
I never use the first formula which as far as I know apply patches on patches applyed on patches applyed on patches…
I always download a combo updater which make a cleaner job.
http://www.apple.com/support/downloads/macosx1055update.html
Yvan KOENIG (from FRANCE mercredi 1 octobre 2008 19:03:43)

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One approach would be to simply read every second row of sensor pixels (1500 rows read from the original 3000) and once you have those in memory, delete every second column (2000 columns left). You would end up with a 2000 x 1500 image which could then be resampled to 1920 x 1080.
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Can Photoshop do that sort of thing? If so, how?

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These are the steps to delete every second row and then every second column.
1. Select Image > Image Size.
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I resampled the Height and Width separately for the test so that I could see what was happening. In a real example, the height and width can be changed at the same time in the one step, achieving the same results as above.
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Division by 2
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Updating the particular row and column in a JTable

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