metadata

I would like to extract two fields from a PNG file. Namely, the geometry field and one of the fields from the metadata. What is the fastest way I could go about doing this? I have benchmarked my script that currently performs this and by far the slowest action is executing the actual ImageMagick "identify" program on the PNG file. (.4 seconds vs .0001 seconds to parse the outputted array for the geometry and 8.39E-5 seconds to parse key phrases from the metadata) Thanks in advance for any help, Jonathan I'm not familiar with any ready-made libraries or classes to do it in PHP without a

How to select all records,that may contain specific value that is known, without referring to specific column in SQL expression? For instance, i know,that some unknown column holds value 'xxx' and there are many columns and records in table. Thank you. So, you want to do a Google-like free text search over your database. This can be done but the performance will be Teh Suck! Google is fast because it has indexes on its indexes, duplicate data stores and generally optimizes everything for precisely this kind of search. Anyway, here is a proof of concept using dynamic SQL and the Oracle data

I have a MySQL database that, I would like to annotate by adding comments to all of the columns, From what I read on the MySQL documentation , it is necessary to include the data type and all attributes when changing any single one of these. For example, I must type ALTER TABLE `dbname`.`tablename` CHANGE COLUMN `columnname` `columnname` INT(11) NULL DEFAULT NULL COMMENT 'this is my comment`; It would be much faster for me to avoid having to restate the column info for each change, for example, by only having to submit a command such as: ALTER TABLE `dbname`.`tablename` CHANGE COLUMN

I have a WebService that expose this $metadata : <?xml version="1.0" encoding="UTF-8" standalone="true"?> <edmx:Edmx xmlns:edmx="http://schemas.microsoft.com/ado/2007/06/edmx" Version="1.0"> > <edmx:DataServices m:DataServiceVersion="1.0" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata"> <Schema xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://schemas.microsoft.com/ado/2007/05/edm" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" Namespace="NAV"> <EntityType Name="PAsset"> <Key> <PropertyRef Name="No"/> </Key>

This is my first question I've a a "little" problem: when i read UIImage metadata on iOS 7 I use this code and it works great #pragma mark - Image Picker Controller delegate methods - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage* image = [info objectForKey:UIImagePickerControllerOriginalImage]; [self metaDataFromAssetLibrary:info]; [picker dismissViewControllerAnimated:YES completion:NULL]; } From imagePickerController i choose the image and call metaDataFromAssetLibrary method - (void) metaDataFromAssetLibrary:

I'm trying to save metadata, but it doesn't get saved, an i don't get any errors either. The image get saved correctly. I'm using the PNGJ library. Reading metadata, (and the image) works correctly, and i'm checking with imagemagick. The code is: ImageInfo imi = new ImageInfo(size.x, size.y, 8, true); PngWriter pngW = new PngWriter(outputStream, imi); pngW.setCompLevel(compressionLevel); pngW.getMetadata().setText(PngChunkTextVar.KEY_Title, "My image"); ImageLineInt iline = new ImageLineInt(imi); for (int row = 0, c = 0; row < pngW.imgInfo.rows; row++) { for (int col = 0; col < imi.cols; col++

Are there best practices or well known methods for publishing/announcing (via metadata etc) what data has been loaded, verified and is currently available for reporting in a data warehouse? I've seen several in-house systems for doing this - some pretty fragile. Are there some well-known concepts or good search terms I could look for? I'm not sure exactly what you're looking for here, but what exactly are the users waiting for? If it's for the system to be available again after a well-defined and consistent daily ETL process runs, then it's easy to send an email, re-enable your reporting