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QUESTION
I'm developing a simple navigator with mapbox API for Android.
I'm creating some routes using https://docs.mapbox.com/playground/directions/ playground and i would like to use the generated JSON to generate a DirectionsRoute
object.
So i call DirectionsRoute.fromJson()
but when i do it, the application crashes with this error:
ANSWER
Answered 2021-Jun-15 at 08:12The response from the mapbox API is not DirectionsRoute
. It is DirectionsResponse
, a structure that looks like this:
QUESTION
I'm trying to print a Sorted List and it looks like the list itself is correct- by printing the inner results, but when I try to print the whole list it shows some weird symbols and crashes. Where am I wrong? This is my main with the function I'm calling in "apply":
...ANSWER
Answered 2021-Jun-11 at 14:08This line:
QUESTION
I have a field that defines the document being approved. Field Name is "WorkflowRequired", which is a choice field. I would like to display a button based on that choice. I can do this singularly but when I attempt to incorporate multiple if statements, the logic fails.
This is what I have. { "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
If([@WorkflowRequired]=='DI Exit', "elmType": "button", "txtContent": "Launch DI Exit", "customRowAction": { "action": "executeFlow", "actionParams": "{"id": "86b2de78-e44c-4e6d-9707-08369f679a42"}" }, "style": { "background-color": "#0080ff", "color": "white", "border-radius": "0 15px", "visibility": "=if(([$DIExitApprovalStatus] == 'Pending'),'visible','hidden')" }
If([@WorkflowRequired]=='OA Exit', "elmType": "button", "txtContent": "Launch OA Exit", "customRowAction": { "action": "executeFlow", "actionParams": "{"id": "e7879e07-2fed-4cee-9a13-9aa4fc673b3c"}" }, "style": { "background-color": "#008082", "color": "white", "border-radius": "0 15px", "visibility": "=if(([$OAExitApprovalStatus] == 'Pending'),'visible','hidden')") }
If([@WorkflowRequired]=='CD_CV Exit', "elmType": "button", "txtContent": "Launch CD_CV Exit", "customRowAction": { "action": "executeFlow", "actionParams": "{"id": "52999e98-ea2b-46c7-ab21-d5e8e727fa94"}" }, "style": { "background-color": "#008082", "color": "white", "border-radius": "0 15px", "visibility": "=if(([$_CD_CVExitApprovalStatus] == 'Pending'),'visible','hidden')" } }
...ANSWER
Answered 2021-May-27 at 06:37QUESTION
I have following example
...ANSWER
Answered 2021-May-25 at 10:59You cannot use inter
in the WHERE
clause because column aliases are not understood there. You could use a CTE or subquery.
However, MySQL extends the use of HAVING
for non-aggregation queries. So you can add a HAVING
clause:
QUESTION
I have the following plot with the code:
...ANSWER
Answered 2021-May-20 at 06:54Let's guess that agegroup
is a string variable, in which case
QUESTION
I'm using OpenApi for Spring Boot application and I have authorization logic with JWT. The authorization request at /api/v1/login
is intercepted and JSON is returned with the user token:
ANSWER
Answered 2021-May-16 at 19:16As per OpenAPI implementation, there is a class OpenAPIService
which has a build()
method that does the following:
QUESTION
I am trying to accept a variable input of many search terms seperated by commas via html form (@search) and query 2 columns of a dataframe.
Each column query works on its own but I cannot get them to work together in a and/or way.
First column query:
...ANSWER
Answered 2021-May-06 at 13:27Without having sample input data, I used a random generated dataset as a showcase:
QUESTION
I am trying to solve a MINLP problem using first the IPOPT solver to get an initial solution then the APOPT to get the mixed integer solution. However, I get the following error when calling the APOPT solver:
Error: Exception: Access Violation At line 359 of file ./f90/cqp.f90 Traceback: not available, compile with -ftrace=frame or -ftrace=full Error: 'results.json' not found. Check above for additional error details Traceback (most recent call last): File "optimisation_stack.py", line 244, in Optimise_G(t,ob, jofbuses, q, qc, s, oa, k, l, T, G_previous, C, Y, G_previous, G_max, G_min) File "optimisation_stack.py", line 134, in Optimise_G sol = MINLP(xinit, A, B, A_eq, B_eq, LB ,UB, t, ob, jofbuses, q, qc, s, oa, k, l, T, G_previous, C, Y, G_previous) File "optimisation_stack.py", line 215, in MINLP m_APOPT.solve(disp = False) File "C:\Users\Zineb\AppData\Local\Programs\Python\Python37\lib\site-packages\gekko\gekko.py", line 2227, in solve self.load_JSON() File "C:\Users\Zineb\AppData\Local\Programs\Python\Python37\lib\site-packages\gekko\gk_post_solve.py", line 13, in load_JSON f = open(os.path.join(self._path,'options.json')) FileNotFoundError: [Errno 2] No such file or directory: 'C:\Users\Zineb\AppData\Local\Temp\tmptdgafg1zgk_model1\options.json'
My code is the following, I tried to simplify it as much as possible :
...ANSWER
Answered 2021-May-08 at 13:24The Windows version of the APOPT solver crashed and wasn't able to find a solution. However, the online Linux version of APOPT is able to find a solution. Get the latest version of Gekko (v1.0.0 pre-release) available on GitHub. This will be available with pip install gekko --upgrade
when the new version is published but for now you need to copy the source to Lib\site-packages\gekko\gekko.py
. After updating gekko
, switch to remote=True
as shown below.
QUESTION
I am attempting to determine the OAS of of a callable bond in QuantLib. However, my results are always negative!?
I am wondering if there is some issue in the call schedule, as the bond yield returned from pricing the bond under the Hull White model seems to be reasonable.
Consider the following bond contract:
...ANSWER
Answered 2021-May-05 at 15:21I would set the prepay penalty (call strike) very high so that it is always uneconomic to call, then observe/confirm that your OAS is zero. That would at least validate some of your overall setup. if it passes that test then I would incrementally make one of them economic, and try pricing the European option separately (you could do closed-form with Jamshidian Engine on top of your HW process which is affine) then see if the decompounded value of the option on the dv01 of the bond is close enough to your OAS (assuming the latter is positive). Although if you have a negative OAS with an American set of call dates, it's unlikely that it will become positive with an European call schedule. But these tests may provide some insights.
QUESTION
I am trying to solve a MINLP problem using gekko. My code is the following:
...ANSWER
Answered 2021-May-03 at 13:00The option minlp_maximum_iterations
is not one of the available options for the IPOPT solver. You correctly discovered that switching to m.options.SOLVER=1
(APOPT solver) resolves this error.
The solver is not finding a solution. I recommend an initialization strategy to first solve with IPOPT without the options. Next, solve again with the APOPT options to see if the IPOPT non-integer solution helps as a starting point to find the optimal integer solution.
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