Pfthb

I;m trying to sort rgb values based on a greedy algorithm that is meant to work by getting a random colour, check the distance between itself and another colour, and then when it finds the one with the shortest distance (euclidean) to itself, append that onto the new array/list.

I'm getting an error concerning the line col[l] not in colouringArray. The point of this line is to make sure colours that are appended to the new list aren't used again.

python

def greedy(cols):

 for i in range(len(cols)):
 col = [eval(j) for j in cols[i]]
 cols[i] = np.array(col)

 greedyResult = #what will contain the result
 colourArray =

 resultIn = 

 randomColour = random.choice(cols) #make a random choice of colours
 colourArray.append(randomColour)

 greedyResult.append(colourArray)

 colouringArray = greedyResult

 resultIn.append(randomColour)

 print(colouringArray)

 for i in range(25 - 1):
 shortestDist = 25
 closestColour = ''


 for l in range(0,25):
 currPosition = colouringArray[-1]
 checkPosition = cols[l]


 distance = euc_distance(currPosition,checkPosition)
 print(colouringArray)
 print(colours[l])
 if cols[l] not in colouringArray:

 if distance < shortestDist:
 shortestDist = distance
 closestColour = cols[l]
 colouringArray.append(closestColour)

 print(colouringArray)
 return colouringArray


def euc_distance(x, y):
 maths = np.sum((x-y)**2)**0.5
 print('x', x)
 print('y', y)
 return maths

Error

 if cols[l] not in colouringArray:
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

RGB values being loaded in from just a .txt file

0.9664535356921388 0.4407325991753527 0.007491470058587191
0.9109759624491242 0.939268997363764 0.5822275730589491
0.6715634814879851 0.08393822683708396 0.7664809327917963
0.23680977536311776 0.030814021726609964 0.7887727172362835
0.3460889655971231 0.6232814750391685 0.6158156951036152
0.14855463870828756 0.18309064740993164 0.11441296968868764
0.014618780486909122 0.48675154060475834 0.9649015609162157
0.06456228097718608 0.5410881855511303 0.46589855900830957
0.6014634495610515 0.08892882999066232 0.5790026861873665
0.26958550381944824 0.5564325605562156 0.6446342341782827
0.48103637136651844 0.35523914744298335 0.249152121361209
0.9335154980423467 0.45338801947649354 0.5301612069115903
0.019299566309716853 0.5081019257797922 0.005780237417743139
0.14376842759559538 0.47282692534740633 0.3773474407725964
0.05417519864614284 0.5875285081310694 0.1640032237419612
0.5573302374414681 0.1442457216019083 0.9373070846962247
0.7709799715197749 0.9569331223494054 0.14122776441649953
0.3053927082876986 0.03958962422796164 0.27678369479169207
0.8065125051156038 0.177343035278254 0.15457051471078964
0.9547186557023949 0.154551400089043 0.8338892941512318
0.04106280627180747 0.38618352833582825 0.3495923019636925
0.3417077927504538 0.8164630567142304 0.47593490813172823
0.7828902895224036 0.4708401253088451 0.8173440068581418
0.8815675986556064 0.43959639767963965 0.781063597792481
0.8147411602576974 0.29567891564250737 0.12387667430690597