I initialize an editable Slickgrid with n rows. A user keys or pastes >n rows of data. The grid adds rows to hold the extra data, but when I then grid.getData() the resulting array has a different format for rows >n. For example, when n=2 it looks like this
[["A","I","X"],
["B","J","Y"],
{"0":"C","1":"K","2":"Z"}]
I need this array to be uniformly constructed. I tried this but without effect:
grid.updateRowCount();
grid.render();
thatdata=grid.getData();
Hopefully I'm missing something simple in the docs--any help appreciated!
Edit: I should have mentioned I'm using the Celebio/Nereo labs fork, so this isn't purely a Slickgrid question.
SlickGrid does not add the data to the array for you. You do that by subscribing to onAddNewRow and providing the implementation to add a new item to the array, so it's your code that adds the data in the wrong format.
Related
In gspread, is it possible to get the last row or cell number that is filled?
The API reference page doesn't seem to help.
Gspread has "row_count", but I am not sure it returns all rows in a spreadsheet, or just the filled ones. If that doesn't help, there is a slightly less direct, but completely functional way to do it:
1.) let's assume your data is in column A, and it has been filled in consecutively row by row (i.e. no skipped rows)
2.) in another free cell in your spreadsheet--let's assume cell B1--use the native Google Sheets function COUNTA, which will count the number of values in a dataset, and specify column A as the target, i.e. "=COUNTA(A:A)"
3.) now just request the value of cell B1 with gspread's acell, i.e. "last_row_updated = myWorksheet.acell("B1").value"
You can use the following code, taken from this answer to this similar question:
def last_filled_row(worksheet):
str_list = list(filter(None, worksheet.col_values(1)))
return len(str_list)
The Problem
I have a very complex, rather outdated jqgrid implementation that I'm upgrading to the latest free-jqgrid and we're having an issue in that after clearing the grid with unload, when we re-initialize the grid, the row ids are higher than they should be to start.
They seem to still be incrementing and not starting again. Are there some global counters I need to clear out to have the grid completely clear itself before we re-render it?
Grid Clear
if ( this.timesheet_grid ) {
this.timesheet_grid.grid.jqGrid( 'GridUnload' );
this.timesheet_grid.grid = null;
this.timesheet_grid = null;
Rows after GridUnload has been run
Shows an id like jqg56
Stuff I've Tried Since Posting
GridDestroy
clearGridBeforeUnload
SOLUTION
As #Oleg has suggested i simply needed to set the id attribute manually when processing the grid data.
I see that your incorrectly understand the meaning of rowids and the requirements for input data. I'm wonder especially about the suggestion of Tony to reset $.jgrid.guid. I find the suggestion very bad because it looks like a solution, but it can produce more seriously problems as the problems, which are solved!
First of all, it's important to understand what is rowid. Rowid is the values of id attribute of the grid rows: the id values of <tr> elements of the grid's body (see here). The rowid are used as a parameter of almost all callbacks and events of jqGrid. Because of that jqGrid must assign id attribute to every row and the input data of the grid have to contain rowid information! The existence of rowids is critical for working jqGrid. Only because of that jqGrid generates unique rowids in case of wrong input data. Alternative for generation of ids would be preventing creating the grid at all.
jqGrid tolerates the error with specifying the rowids in input data only for some simple grids, where one need just display some simple data and one never need to use rowids. If you use ids then you should fix the problem only in one way: you have to fix your input data. You can for example include id property with unique value in every element of input data. You should take in consideration that no id duplicates exist not only in the grid but on the whole HTML page. It's strictly recommended to use idPrefix option with unique value for every grid always if your HTML page have more as one grids (inclusive grid with subgrids).
Resetting of $.jgrid.guid is very dangerous and it can break functionality of jqGrid because of creating elements with duplicate id values. The property $.jgrid.guid is global. It's common over all grids and subgrids on the page. Simple subgrids scenario will produces id duplicates after you manually reset $.jgrid.guid. It will be used inside of $.jgrid.randId() method used in many places of jqGrid code. For example, the method addRow used by inlineNav uses the method.
I repeat my suggestion more clear once more. If you uses rowids or if the values of rowids are important for you in some way then you have to include id property to every item of input data. If some other property has already an unique value then you can add key: true in the corresponding column of colModel (one can use key: true in only one column). Alternatively, you can add prmNames: { id: "myId" } if myId property of input data contains unique rowid instead of default id property.
jqGrid uses common counter in order to be a sure that there will be no duplicate values when a build in id generator is used.
To reset the value you will need to set the guid parameter to 1 - i.e
$.jgrid.guid =1;
after you unload the grid
If the solution is based on the knowing the behavior of the product, then this is a good solution.
If we try to solve the problem, without to knowing the behavior - it is a dangerous solution.
It is very easy to say - this is bad solution and it is very very dangerous to use this solution - so my question is:
What is happen with the counter if the user reload the page under some conditions?
The answer is: the counter is reset and we go to the same situations which are described in the above answer.
Heres my problem. I have a working dc.js based dashboard and some data within it. A column of the data contains text data (twitter info). Is it somehow possible to extract that specific column from crossfilter? My aim is to create some charts and the crossfilter containing the text data should feed into a d3 based word cloud so that i can do the drill down based filtering as well which dc and crossfilter provide out of the box. I tried a dimension.top(infinity) but that returns all the key value pairs in the data. I just need the values for a particular key across the whole data set. I hope my question makes some sense.
EDIT:
More research reveals that the wordcloud will accept data in key value pair where the key is the word and value is its frequency of appearance. So i am guessing that will need to be implemented as well. If there is a ready to implement library out there kindly let me know as well. This changes things a bit as far as crossfilter is concerned.I need to throw this calculated key value pair (fit for the word cloud consumption) whenever a filter is triggered. How to go about it?
Looking forward to hearing from you all.
Best,
Anmol
Answer to the first part of the question: Probably dimension.top(Infinity) and then use an accessor to get the values you need. Not exactly efficient, but it is what it is.
Answer to the 2nd part of the question:
You need groupAll, I think. You want to take a tweet, generate an array of tokens (words), then generate a Crossfilter grouping that is a count per word, right? You can code your own custom crossfilter.dimension.groupAll reducers (if you want to do that, create a working example and I can probably cook it up). Or if you want to use Reductio:
tweetWords = data.dimension(function(d) { return d.tweetText.split(' '); });
wordCounts = tweetWords.groupAll();
reducer = reductio()
.groupAll(function(d) {
return d.tweetText.split(' ');
})
.count(true);
reducer(wordCounts);
wordCounts.all();
If you want to filter on this dimension you'll have to override the filter handler and check if the group key is in the dimension array for the record using a filterFunction.
I am new to handsontable.
My handsontable rows are readonly.
I wanted to remove all rows of handsontable on a button click.
Please help me.
Do update with empty dataset:
handsontableInstance.updateSettings({
data : []
});
This removes all rows (and leave header if there is some).
There are many ways to "remove" all rows. For example, one, and the easiest, would be to empty your data array. So say that you initialized your HOT instance with the data field as array dataArray. Your button would only need do:
$("#buttonId").click(function() { dataArray = [];})
That would be the easiest way but of course you'd be bypassing HOT. This means that if your application gets more complex and you rely on handlers such as afterRemoveRow, then this method will bypass them. In this latter case, you'd want to use the hot.alter() method as follows:
hot.alter('remove_row', 0); // would remove the row at index 0;
With this I am assuming you know how to use a for loop that could iterate through all rows and remove them, one by one. An expensive operation but it would ensure all the proper handlers get called.
tableInstance.clear()
Clears the data from the table (the table settings remain intact).
refer to the
doc
In a DexEpress ASPxGridView I have a column that contains voltage. The original values look like 200, 1000, 120 but I am applying a scaling that transforms the values into 200 V, 1 kV and 120 V.
How do I sort the column based on the original values and not the string values?
(In a .Net datagrid I had 2 columns: one with the original data (hidden) and one with the transformed data and I used the original data column to sort the rows. Is there something similar here?)
Set the column's Settings.SortMode to the Value property. This should force the grid sort value in this column the way you need it.
I had a problem with sorting. I sorted a column by using
this.gvRuleDetail.SortInfo.AddRange(new DevExpress.XtraGrid.Columns.GridColumnSortInfo[] {
new DevExpress.XtraGrid.Columns.GridColumnSortInfo(this.gcRuleOrder, DevExpress.Data.ColumnSortOrder.Ascending)});
but then I realized that column shown sorted but actual data I mean first loaded data is not sorted. To solve this you also have to update first data:
this.gvRuleDetail.BeginSort();
this.gvRuleDetail.SortInfo.AddRange(new DevExpress.XtraGrid.Columns.GridColumnSortInfo[] {
new DevExpress.XtraGrid.Columns.GridColumnSortInfo(this.gcRuleOrder, DevExpress.Data.ColumnSortOrder.Ascending)});
this.gvRuleDetail.EndSort();
for devexpress problems, I recommend devexpress documentation here