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import SwiftUI import UIKit class MatrixViewController: UIViewController { let matrix = [ [A5, B5, C5, D5, E5], [A4, B4, C4, D4, E4], [A3, B3, C3, D3, E3], [A2, B2, C2, D2, E2], [A1, B1, C1, D1, E1], ] let matrixLabelSize: CGFloat = 30.0 override func viewDidLoad() { super.viewDidLoad() setupMatrixView() } func setupMatrixView() { let matrixView = UIView() matrixView.translatesAutoresizingMaskIntoConstraints = false view.addSubview(matrixView) let matrixViewWidth = CGFloat(matrix[0].count) * matrixLabelSize let matrixViewHeight = CGFloat(matrix.count) * matrixLabelSize NSLayoutConstraint.activate([ matrixView.centerXAnchor.constraint(equalTo: view.centerXAnchor), matrixView.centerYAnchor.constraint(equalTo: view.centerYAnchor), matrixView.widthAnchor.constraint(equalToConstant: matrixViewWidth), matrixView.heightAnchor.constraint(equalToConstant: matrixViewHeight) ]) var positionCounts: [String: Int] = [:] //counting the number of occurences - - - - - - this part for coordinate in coordinates { let row = coor

From what I've understood, it doesn't need to be 5 dimensional, but rather, 2 dimensional. The dimension in a matrix doesn't correspond to the number of rows and columns. In your case, two dimensions seems enough: one for the severity (from one to five), and one for the likelihood (1 to 5). You could therefore store data like so : Matrix[2][5] = 3 (which would mean that there are 3 questions that have a severity of 2 and a likelihood of 3). A good visual representation of the dimensions of a matrix would be the following. A one-dimensional matrix is just an array/list. A two dimensional array corresponds to an Excel/Numbers spreadsheet. And a three dimensional array could be use to store the coordinates of the cubes composing a Rubik's Cube, for example. Above 3, it's hard to have a visual representation. A 5-dimensional matrix would be suitable if you had 5 different sliders per question. Therefore, if you can represent your table in a spreadsheet, it means that two dimensions is enough. Let me know

The code is very long so i hope this edit is sufficient to read. Where do you use relativeRiskPickerIndex31? - there are 31 questions in this part of the app,. each app has 2 sets of answers for users to choose from. #1 Slope Angle (they choose answer from picker one) and picker two in the relativeRiskPickerIndex.. basically there are from 1 until 31 risk picker indexes using this: let relativeRiskChoices = [Select, Negligible, Minor, Moderate, Significant, Major] let relativeRiskScores = [-,A, B, C, D, E] //the code above this line is from another swift file that just gets called to the file to the code below. The state var values are all zero. There is no error message inside the code lines but when I run the simulator and try to run and pick answers from the questions and answers inside the simulator, it Freezes and stops working. so i have to force quit it again to try to run it again. however, if i do not use the pickers and just directly try to export pdf, it works. The last time I tried this popped up

I submitted FB12211784 the end of May. It contains a do-nothing-much app that creates a two column table of 10K entries. Selecting an item in the table causes the color of the text in the first column to change. On my 2019 intel iMac there is about a 140 msec delay between selection and the color change. That is noticeable. I just re-ran the code using a brand new Mac Studio with M2 Max. It still takes over 100 msec. Still noticeable.

I moved the on appear to the h stack but the table rows portion of the table still ran before the on appear resulting in an index out of range error. So I added the suggested state variable and if statement. The view now works perfectly. Thank you again for providing great advice. Below is the updated code. struct DataTable: View { @ObservedObject var vm: ButtonsViewModel = ButtonsViewModel.shared var closingValues: [TradingDayClose] var heading: String = @State private var hasAppeared = false init(fundName: String, closingValues: [TradingDayClose]) { self.heading = fundName self.closingValues = closingValues } var body: some View { HStack { Spacer() .frame(width: 150) GroupBox(heading) { if hasAppeared { Table (of: TradingDayClose.self) { TableColumn() { closingValue in Text(dateToStringFormatter.string(from: closingValue.timeStamp!)) .id(closingValue.timeStamp!) .textFormatting(fontSize: 14) .frame(width: 100, alignment: .center) } // end table column TableColumn() { closingValue in Text(String(fo

Thank you for responding to my question. Below is a simplified code example that displays two SF Symbol images on a Grid View, as seen in the gif. I've included a basic DragGesture but I have a feeling it isn't the right approach. In order for it to work the onEnded closure would need to somehow map the offset coordinate into a Square enum case so that I could update the ModelState. I intend for the board and pieces to scale to fit the available space so the size of the squares won't be known beforehand, making the coordinate mapping difficult. Maybe **GeometryReader ** could solve that but I could see the code becoming a mess. I see other drag and drop methods in the documentation, surely one them is designed to better fit this use case. dropDestination seems like a suitable candidate but I think read somewhere that it doesn't work with SF Symbols. I'm looking for guidance from someone familiar with Apple's documentation because they provide little explanations themselves (I've watched WWDC videos). Also the