I am working with two collections of satellite data. I want to select specific bands from "collection 1", join them to "collection 2", and then run a function. Unfortunately, the function does not work with the joined data, although it works for "collection 1".
Here is an example just using B10 of Sentinel-2
//identifying area and date
var geometry = ee.Geometry.Point([4,45]);
Map.centerObject(geometry,10);
var start = '2019-03-10';
var end = '2019-05-10';
//my function
function testing(img){
img = img.updateMask(img.select(['B10']).gt(200).focal_min(2).focal_max(2).not());
return img;
}
//my two collections
var collection1 = ee.ImageCollection('COPERNICUS/S2').filterDate(start,end)
.filterBounds(geometry);
var B10s=collection1.select('B10');
//print('B10s',B10s);
var collection2 = ee.ImageCollection('COPERNICUS/S2_SR')
.filterDate(start,end)
.filterBounds(geometry);
// joining the collections
var filtering = ee.Filter.equals({
leftField: 'system:time_start',
rightField: 'system:time_start'
});
var simpleJoin = ee.Join.inner();
var innerJoin = simpleJoin.apply(collection2, B10s, filtering);
var joined = innerJoin.map(function(feature) {
return ee.Image.cat(feature.get('primary'), feature.get('secondary'));
});
print('Joined', joined);
//just to visualize one image
//var coll1 = ee.Image(collection1.first());
//Map.addLayer(coll1, {bands:['B2'], min:0, max:5000},'B2Coll1 test');
//running the function for collection 1 works
var test = collection1.map(testing);
var tess = ee.Image(test.first());
Map.addLayer(tess, {bands:['B2'], min:0, max:5000},'B2 test');
//here when running with the joined collection, there is a problem
var TestingJoined = joined.map(testing);
The error is: img.select(...).gt is not a function
How do I make this work?
When you debug, does the join work as intended? Is there any issue with the datetimes being too-precise to allow a full join?
The second route I would go down is ensuring that the joined object is identical to collections. I doubt this would be the case without you casting it or something (though I'm not familiar with this library). Your "testing" function that you're mapping to these collections may work with just the unjoined ones. If you provide the actual 'Problem' or error output that would be immensely helpful.
Ok. I solved it. Thank you for your input.
I needed to use a cast in the function. Now it works.
function testing(img){
img = ee.Image(img).updateMask(ee.Image(img).select(['B10']).gt(200).focal_min(2).focal_max(2).not());
return img;
}
Related
need some help with script on google sheets
I'm having some issues to try to use "setVisibleValues" and I got an error saying "Exception: Visible values are not currently supported. As an alternative specify a list of hidden values that excludes the values that should be visible.". But my problem is, I've a huge number of employee names on a list, and I wanna filter just based in one person.
I cant show some information, but the thing is: "I just wanna filter one value, and I don't know how to do it using "setHiddenValues".
function Filtersheet() {
var spreadsheet = SpreadsheetApp.getActive();
spreadsheet.getRange('A3:S').activate();
spreadsheet.getRange('H3').activate();
var criteria = SpreadsheetApp.newFilterCriteria()
.setHiddenValues([''])
var criteria = SpreadsheetApp.newFilterCriteria()
.setVisibleValues(['tayzer'])
.build();
spreadsheet.getActiveSheet().getFilter().setColumnFilterCriteria(8, criteria);
}
Lets say that the names of the Employees are : jorge, lucas, nuno, fernando, marta, beatriz, tayzer, larissa, and I wanna use the filter script to only show on the column the information related to tayzer
But my way to change the filter employee will be on a cell outside the script (cause I've around 200 employees)
Thanks in advance for the help
try this
function setFilter() {
// replace 'sheet name' with you sheet
var ss = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('sheet name');
var range = ss.getDataRange();
var filter = range.getFilter() || range.createFilter()
var criteria = SpreadsheetApp.newFilterCriteria().whenTextContains('tayzer');
filter.setColumnFilterCriteria(8, criteria);
}
if i am not wrong if you put "jorge" in cell_C4 you want it to filter "jorge" in column E, if so try below code.
function setFilter() {
// replace 'sheet name' with you sheet
var ss = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('sheet name');
var range = ss.getDataRange();
var filter = range.getFilter() || range.createFilter()
var criteria = SpreadsheetApp.newFilterCriteria().whenTextContains(ss.getRange('C4').getValue()).build();
filter.setColumnFilterCriteria(8,criteria)
}
I'm trying to implement filtering on a table. This involves the getBinding() function.
getBinding() works fine with a single table - id of "stock_table".
// update list binding
var list = this.getView().byId("stock_table");
var binding = list.getBinding("items");
However, when accessing multiple generated tables of the same Id, the getBinding() returns 'undefined'
How do I apply a filter to multiple tables with the same id?
Solution was this...
Thanks for your help!
// Filter every table with the group container
var oGroupContainer = this.getView().byId('groups_container');
var oGroupItems = oGroupContainer.getRows();
_.each(oGroupItems, function (oCategory) {
var content = oCategory.getAggregation("content");
var itemBinding = content[0].getBinding("items");
itemBinding.filter(aFilters);
});
I'm using: ASP.NET MVC, MySql, Dapper.NET micro-orm
I made a stored procedure with 3 SELECTs, two of which returns lists and the third one returns an integer.
Here is my code:
using (var conn = new MySqlConnection(GetConnectionString()))
{
var readDb = conn.QueryMultiple(storedProcedure, parameters, commandType: CommandType.StoredProcedure);
var result = new someView
{
TopicsList = readDb.Read<ITopic>().ToList(),
TopTopicsList = readDb.Read<IMessage>().ToList(),
TopicsCount = readDb.Read<int>().Single()
};
return result;
}
In ITopic I have TopicId, in IMessage I have MessageId.
And here's the error:
When using the multi-mapping APIs ensure you set the splitOn param if you have keys other than Id Parameter name: splitOn
I tried adding splitOn on both QueryMultiple and Read, and nigher accepted it.
Though I dont understand why I need splitOn? can't dapper see that I have three separate SELECTs? When using conn.Read(storedProcedure,parameters) on each of the selects separately (instead of MultipleQuery on all of the together) dapper has no problem mapping it to a given object.
What am I doing wrong?
1) Problem solved when I used the real models names instead of their interfaces names:
TopicView instead of ITopic, TopTopicsView instead of IMessage;
2) Once that was fixed and there was no longer "no splitOn" error, started another problem with the < int > casting in line:
TopicsCount = readDb.Read<int>().Single()
probably mysql doesnt return numbers back as ints?
I tried using decimal, object, dynamic, etc.. with no luck. Eventually fixed it by creating another Model with int property inside that has the same name as the database int parameter and now it works.
3) Here's the final working code:
using (var conn = new MySqlConnection(GetConnectionString()))
{
var parameters = context.MapEntity(query);
var multi = conn.QueryMultiple(storedProcedure, parameters, commandType: System.Data.CommandType.StoredProcedure);
var TopicsList = multi.Read<TopicView>().ToList();
var TopTopicsList = multi.Read<TopTopicsView>().ToList();
var result = multi.Read<HomeView>().Single();
result.TopicsList = TopicsList;
result.TopTopicsList = TopTopicsList;
return result;
}
I want to write a slightly complex query, so I wonder if there is a way to provide a custom function as the predicate of a where clause.
For example, it would be nice if we could do something like:
var myArray = [1, 2, 3];
var filter = function (person) {
return elementExists(person.id, myArray);
};
EntityQuery.from('persons').toType('Person')
.where(filter);
Looking at the source code I realized that such capability is not present in the latest version of BreezeJS (i might be wrong).
I just wonder if breeze supports anything similar to that.
On the client side you should be able to find out if the element exists by checking the length of the return.
var getItems = function (runId, tankId, topicId) {
var localquery = EntityQuery.from("Items")
.using(manager);
var p1 = new breeze.Predicate("runId", "eq", runId);
var p2 = breeze.Predicate("tankId", "eq", window.app.vm.tanks.activetank());
var p3 = breeze.Predicate("topicId", "eq", topicId);
var p4 = breeze.Predicate("topicId", "eq", app.Topics.Growth_Topic);
var pred;
var runId = p1._value;
var tankId = p2._value;
// If the third parameter exists, add it to your complex predicate
// adding a specific Topic to the predicate
// Otherwise only add the General topic
if (p4)
pred = breeze.Predicate.or([p3, p4]);
else
pred = breeze.Predicate.or(p3);
var newpred = breeze.Predicate.and([p1, p2, pred]);
// newpred is now querying for a specific runId and tankId and (p3 or p4) if p4 exists
// otherwise it is querying for runId and tankId or (p3)
// So look in the local metadataStore first
var queryb = localquery.where(newpred);
var results = manager.executeQueryLocally(queryb);
// If we do have it locally use it
if (results.length) {
window.app.vm.Items.Items(results);
}
// otherwise get it from the database
else {
var query = EntityQuery
.from("Items")
.where(newpred);
// return the promise from breeze
return manager.executeQuery(query)
.then(function (data) {
// check to see if the call to the webapi controller returned any data
if (data.length > 0) {
// stick it into the viewmodel it to your viewmodel
window.app.vm.Items.Items(data.results);
return "element exists";
} else {
return "element does not exist";
}
})
.fail(queryFailed);
}
};
This example is quite a bit more complicated that you requested, so cut out the parts you do not want to simplify your query. I am showing you here how to get both an "and" and an "or" into your query. I am also showing how to check the local metadataStore, to see if the item is there before going to the server.
If the item does not exist and you want to create it, be careful about your thread timing and wrap the object creation in a promise before you do something like navigating to another page to show the new item. The navigation may be faster than the creation function and the new item may not be bound into your viewmodel yet by knockout, so it might show up blank on the new page. That will drive you crazy for quite a while.
I have a need where i want to get the count of deleted items and get change set/collection for items that are not deleted.
How can i achieve that ?
i am able to do it using the LINQJS, but was wondering if there is more proper way of doing it.
var countryType = manager.metadataStore.getEntityType("Country");
var countries = manager.getEntities(countryType);
var deletedCount = Enumerable.From(countries)
.Where(function (x) {
return x.entityAspect.entityState == "Deleted"
}).Count();
self.totalRows(self.totalServerRows() - deletedCount);
var queryResult = Enumerable.From(countries)
.OrderBy(function(x){ x.Country_Code })
.Where(function (x) {
return x.entityAspect.entityState != "Deleted"
})
.Skip(self.pageIndex() * self.pageSize())
.Take(self.pageSize())
.ToArray();
self.list(queryResult);
The EntityManager.getEntities call is overloaded (see: http://www.breezejs.com/sites/all/apidocs/classes/EntityManager.html#method_getEntities ) so that you can simply ask for those entities within the entityManager that are of specific types or in specified states. So for 'deleted, try this:
var deletedEntities = em.getEntities(null, [EntityState.Deleted]);
or if you wanted just the Added or Modified entities
var deletedEntities = em.getEntities(null, [EntityState.Added, EntityState.Modified]);
I hope this helps.