I am currently trying to extend a series of parallel lines to 2 perpendicular lines in QGIS (https://i.stack.imgur.com/aQN7v.png). I have found two ways of doing this.
Use the extend tool within the QAD plugin, selecting the outer lines first and then selecting each parallel line separately to extend it to the outer line.
Use the trim/extend tool in the advanced digitising panel to do the same thing
However each parallel line has to be clicked individually for both of these solutions which in my case (100s of lines) takes a very long time. Does anyone know how to extend multiple lines at once?
It would also work if I could just specify the line length of multiple lines at once
Related
I am trying to use parameter variation in AnyLogic. My inputs are 3 parameters, each varying 5 times. My output is water demand. What I need from parameter variation is the way in which demand changes according to the different combinations of the three parameters. I imagine something like: there are 10,950 rows (one for each day), the first column is time (in days), the second column are the values for the first combination, the second column is the second combination, and so on and so forth. What would be the best way to track this metadata to then be able to export it to excel? I have added a "dataset" to my main to track demand through each simulation, but I am not sure what to add to the parameter variation experiment interface to track the output across the different iterations. It would also be helpful to have a way to know which combination of inputs produced a given output (for example, have the combination be the name for each column). I see that there are Java Actions, but I haven't been able to figure out the code to do what I need. I appreciate any help with this matter.
The easiest approach is just to track this in output database tables which are then exported to Excel at the end of your run. As long as these tables include outputs from multiple runs (and are, for example, only cleared at the start of the experiment not the run), your Parameter Variation experiment will end up with an Excel file having outcomes from all the runs. (You will probably need to turn off parallel execution in the PV experiment so you don't run into issues trying to write to the same Excel file in parallel.)
So, for example, you might have tables:
run_details with columns id, parm1, parm2 and parm3 (with proper column names given your actual parameters and some unique ID generated for each run)
output_demand with columns run_id, sim_time_hrs and demand_value (if, say, you're storing some demand value each hour of simulated time) where run_id cross-references the run's ID in run_details
(There is extra complexity in how you could allocate a unique run ID and how and when you write to/clear those tables, but I'm just presenting the core design. You can also get round the need-serial-execution point by programmatically controlling when you export to Excel, rather than using the built-in "Export tables at the end of model execution" capability, but that's also more complicated.)
using Talend Open Studio, I have a data-processing component, for which I'd appreciate your advice on how to make this possible (a) in a single component and (b) without a dirty workaround - thanks.
Relating part (a):
I have two different inputs:
One Input (with exactly one row) defines some kind of metadata for my processing.
One Input (with 1...n rows) defines the core data to process.
Currently, I solved this first requirement using two components and passing my metadata to the second component using the globalMap. But it would be nice, if I could integrate both connections into one component.
Relating part (b): After I have read all my input rows, I need to process them all at once. So far, so easy, I could use the end-section - my problem comes here: After that processing, I need to create a number of output-rows for a single output connection. Problem is, that Output-rows can only be created in the main-part and there I don't know when the last row was read...
Currently, I solved this counting the input-rows in advance and then, after that number is reached, I create that output. But this seems a really dirty workaround to me, so maybe someone has a solution for that, too?
Thank you for any useful tips!
My Jasper Report has Detail element that holds List element. Every list entry of which contains number of tables.
I need to add page break between those tables.
The problem is that it is not possible to add line break. I am able to drag it between tables but the report stops working after adding it. It turns out that break is not supported in such places.
Is there a way to workaround this? Currently I'm thinking of adding some fake element that would consume some space but will be invisible, however it is not as simple.
I know it could be achieved by introducing sub-reports, but this requires complete redesign of my report so it is not an option for me.
When I use emacs, I frequently use follow-mode to show one buffer in two columns side by side where the first line of the right hand column is the line after the last line in the left column - basically, two columns like reading two pages side by side.
Is there a way to achieve this in VS code? I currently open the same file side-by side, and manually scroll the sides to where I want them - but it's nice to have the two kept in sync automatically as I edit and move around.
i'm creating some BIRT-Reports with Eclipse. Now i got the following problem.
I've got two datasets (Set one named diag, set two named risk). In my report i produce fpr every data in diag a region with an diag_id. Now i tried to use this diag_id as input parameter for the second dataset (risk). Is this possible, and how is this possible?
To link one dataset to another in BIRT, you can either:
Create a subreport within your report that links one dataset to another via an input parameter - see this Eclipse tutorial.
or:
Create a joint dataset that explicitly links the two datasets together - see the answer to this StackOverflow question.
Alternatively, if both datasets come from the same relational database, you could simply combine the two queries into a single query.
If you are using scripted data sources, you could use variables.
Add a variable through the Eclipse UI called "diag_id".
In the fetch script of diag, set diag_id:
vars["diag_id"] = ...; // store value in Variable.
Then, in the open script of risk, use the diag_id however you need to.
diag_id = vars["diag_id"];
This implies that placement of risk report elements are nested inside the diag repeating element so that diag.fetch will happen before each risk.open.