save

问题 When I save a figure from MATALB, I'd like the resulting image to have very high resolution so that I can zoom in to see detail in the image. When I use 'File --> Save As' on a figure, the image is not high resolution. How can I save a figure to a high resolution image in MATLAB? 回答1: You can specify a desired resolution to save the image, either from the command line or from the File menu. Command line: Using print , just include the option -r### , where ### if the resolution you want.

问题 I have a basic app with text inputs, a spinner input, and a second spinner input whose array depends on a setting changed in the Options menu. Currently, when I press Home or press Return while in my app, I either return to the desktop or cycle back through old inputs i put in recently. How can I prevent my app from opening multiple instances of itself so that there is only one instance running at any given time, and then how can I save the data entered into inputs, and the settings chosen in

问题 I am very new to CoreData and in my iPhone app I want to know how to save some text, then load it back in. But the trick is, loading it back in when the date in the UIDatePicker is the same as when I saved it, like a calendar. Hope you can help in anyway. Its pretty important I learn how to do this fairly soon, so any help is massively appreciated, thanks. UPDATE: Thanks for the replies, especially the for the code sample. However I have some issues understand how this fits together, forgive

问题 does anyone know if there is a VALIDATE function for a form in cakePHP and view the errors array? i.ve checked the documentation but the only thing i found is the SAVE function, i just need to know if the data i send is valid and review the errors manually. 回答1: Try this $this->ModelName->set( $this->data ); if ($this->ModelName->validates()) { // it validated logic } else { // didn't validate logic } And read this 来源： https://stackoverflow.com/questions/3343472/cakephp-form-validation

问题 I've made a class in which I want to keep track of stats of students. I intend to make a GUI later to manipulate this data. My main question is: what is the best way to save and later retrieve this data? I've read about pickle and JSON, but I don't really get how they work (especially about how they save the data, like in which format and where). 回答1: For persistent data (storing info about students), a database is a good choice. As already mentioned, Python comes shipped with Sqlite3 which

问题 What approach could someone suggest to save the current page as an HTML file to the server? In this case, also note that security is not an issue. I have spent endless hours searching around for this, and have not found a single thing. Your help is much appreciated, thank you! Edit Thank you all for your help, it was very much appreciated. 回答1: If you meant saving the output of a page in a file, you can use buffering to do that. The function you need to use are ob_start and ob_get_contents. <

问题 What approach could someone suggest to save the current page as an HTML file to the server? In this case, also note that security is not an issue. I have spent endless hours searching around for this, and have not found a single thing. Your help is much appreciated, thank you! Edit Thank you all for your help, it was very much appreciated. 回答1: If you meant saving the output of a page in a file, you can use buffering to do that. The function you need to use are ob_start and ob_get_contents. <

问题 Similar questions have been asked already but none was able to solve my specific problem. I have a .R file ("Mycalculus.R") containing many basic calculus that I need to apply to subsets of a dataframe: one subset for each year where the modalities of "year" are factors (yearA, yearB, yearC) not numeric values. The file generates a new dataframe that I need to save in a Rda file. Here is what I expect the code to look like with a for loop (this one obviously do not work): id <- identif(unlist

问题 Hey guys maybe someone of you can help me: What im doing: I have a button in my ContactView that lets me select a phonecontact and inserts name and phonenumber into textviews. The Problem I have is that when i swap between MainActivity and ContactActivity the Contact is deleted and i need to select again a contact Here is my ContactView code public class ContactView extends AppCompatActivity { private static final int RESULT_PICK_CONTACT = 85; private TextView textView1; private TextView

问题 I trying save image with the comand 'getframe' but resolution is very low, so I can not give zoom. for now I'm using the code: [arq,dir] = uiputfile('*.jpg','Output Files'); fileName=fullfile(dir,arq); f=getframe(handles.axes1); [x,map]=frame2im(f); imwrite(x,fileName,'jpg'); I need save in jpg and also need save the label (x,y) in graph. How do ? There is another command better than the getframe?? Print is a good command? Thanks 回答1: try using something other than jpg, it doesn't scale well.