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Mastering Development

E/libc: Access denied finding property “persist.vendor.sys.activitylog”

I am not sure where is the problem. This app is a drawing app. The error came out is E/libc: Access denied finding property "persist.vendor.sys.activitylog" Codes are copied from Youtube. However, there are not many errors inside the codes. Esp the Button, showColordialog. The system asked me to debug the app; hope for a second […]

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Mastering Development

R. Multivariate linear regression based on 3 files

I have a data frame A (the real one has 1000 rows): ID SEX AGE X Y A M 2 0 15.5 8.6 2.4 0.2 0.45 7 1 13.3 7.6 3.2 0.3 0.44 Another data frame B (the real one has 1,100,000 columns and 1000 rows) with elements 0,1 or 2: rs1 rs2 rs7 rs14 […]

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Mastering Development

Adding visible axes in matplotlib

I have a figure, which is some polynomial, and I want to have visible axes so I can see where it passes through y axis. plt.axes() isn’t what I want, it’s rather about axes that are the borders of your graph. I could simply plt.plot() the axes the way I need, but I don’t think […]

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Mastering Development

Adding Watermark/Text over Image in Flutter – Dart

I am trying to add Text on image and then saving it to gallery. Code: _originalImage = File(pickedFile.path); ui.Image Img = ui.decodeImage(_originalImage.readAsBytesSync()); ui.drawString(Img, ui.arial_24, 100, 120, ‘Add Text’); List<int> wmImage = ui.encodeJpg(Img); _watermarkedImage = File.fromRawPath(Uint8List.fromList(wmImage)); But this throws an error: FileSystemException: Cannot open file, path = ??? I am fetching Images from ImagePicker (Camera) Source.

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Mastering Development

There is already an object named ‘…’ in the database. Where Can I find the request?

Hi it’s my first time using Microsft SQL and I really don’t know how it works. I have made a new request and create a new table and this error message happened. "There is already an object named ‘Employe’ in the database." Anyone know how fix this and can tell me where I can find […]

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Mastering Development

upload multiple images using volley multipart android

I wrote some code in android to upload a single bitmap to my server, now I’m trying to upload multiple images to my server, but only the last selected image gets uploaded Below is how I get the bitmap image in my onActivityResult public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); […]

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Mastering Development

Multiple joins on the same table multiply counts

When I run multiple joins on the same table, the first join seems to be the only one to go through. For example, I’ll get results like this: ID, NAME, 200, 200 ID, NAME, 150, 150 ID, NAME, 100, 100 Where obviously the ticket count is clearly not the same as the time entry count. […]

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Mastering Development

Select IDs which satisfy a condition in each repetition

I want to select from column ID those unique elements which are completed. Each ID represent a task and can appear multiple times. A task is completed only when the status column has a value of 100 for every row. Example of dataset: import pandas as pd df = pd.DataFrame(data= {‘ID’: [‘A’, ‘A’, ‘B’, ‘B’, […]

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Mastering Development

How to check for an undef value in a Matrix (in Julia) and assign a new value?

I want to create a matrix A of undefined values and have the following code that works just fine. A = Matrix{Tuple{Float64, Array{Int64, 1}}}(undef, 100, 100) Later, I want to check if a particular cell is undefined and if so, assign a value after computing it. I tried isdefined(A, i, j) but that gave an […]

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Mastering Development

TypeError: this.$refs.carouselElement.scrollTo is not a function

Thanks to the help of a fellow community member who helped fix one of the bugs on my carousel. But… the errors continue. One is fixed and two more come out. Now the error that is persistent is the one mentioned in the title. I’m following the example of another project that has the same […]